1210201021120 has 224 divisors, whose sum is σ = 3755457917568. Its totient is φ = 360478605312.

The previous prime is 1210201021111. The next prime is 1210201021129. The reversal of 1210201021120 is 211201020121.

It is an interprime number because it is at equal distance from previous prime (1210201021111) and next prime (1210201021129).

It is a tau number, because it is divible by the number of its divisors (224).

It is a super-5 number, since 5×1210201021120⁵ (a number of 62 digits) contains 55555 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 1210201021120.

It is not an unprimeable number, because it can be changed into a prime (1210201021129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 727287 + ... + 1717366.

It is an arithmetic number, because the mean of its divisors is an integer number (16765437132).

Almost surely, 2^{1210201021120} is an apocalyptic number.

1210201021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210201021120 is an abundant number, since it is smaller than the sum of its proper divisors (2545256896448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1210201021120 is a wasteful number, since it uses less digits than its factorization.

1210201021120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2444707 (or 2444697 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1210201021120 its reverse (211201020121), we get a palindrome (1421402041241).

Subtracting from 1210201021120 its reverse (211201020121), we obtain a palindrome (999000000999).

The spelling of 1210201021120 in words is "one trillion, two hundred ten billion, two hundred one million, twenty-one thousand, one hundred twenty".