1211002730120 has 64 divisors (see below), whose sum is σ = 2737741852800. Its totient is φ = 482097623040.

The previous prime is 1211002730111. The next prime is 1211002730243. The reversal of 1211002730120 is 210372001121.

It is a super-2 number, since 2×1211002730120² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1211002730092 and 1211002730101.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7560221 + ... + 7718739.

It is an arithmetic number, because the mean of its divisors is an integer number (42777216450).

Almost surely, 2^{1211002730120} is an apocalyptic number.

1211002730120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211002730120 is an abundant number, since it is smaller than the sum of its proper divisors (1526739122680).

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

1211002730120 is a wasteful number, since it uses less digits than its factorization.

1211002730120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159438 (or 159434 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 20.

Adding to 1211002730120 its reverse (210372001121), we get a palindrome (1421374731241).

The spelling of 1211002730120 in words is "one trillion, two hundred eleven billion, two million, seven hundred thirty thousand, one hundred twenty".