210000121102120 has 64 divisors (see below), whose sum is σ = 491792118192000. Its totient is φ = 80605927519488.

The previous prime is 210000121102097. The next prime is 210000121102129. The reversal of 210000121102120 is 21201121000012.

It is a super-4 number, since 4×210000121102120⁴ (a number of 58 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 210000121102120.

It is not an unprimeable number, because it can be changed into a prime (210000121102129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 555131740 + ... + 555509899.

It is an arithmetic number, because the mean of its divisors is an integer number (7684251846750).

Almost surely, 2^{210000121102120} is an apocalyptic number.

210000121102120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210000121102120 is an abundant number, since it is smaller than the sum of its proper divisors (281791997089880).

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

210000121102120 is a wasteful number, since it uses less digits than its factorization.

210000121102120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110641842 (or 1110641838 counting only the distinct ones).

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

Adding to 210000121102120 its reverse (21201121000012), we get a palindrome (231201242102132).

The spelling of 210000121102120 in words is "two hundred ten trillion, one hundred twenty-one million, one hundred two thousand, one hundred twenty".