210120111102 has 32 divisors (see below), whose sum is σ = 459587188224. Its totient is φ = 63513968000.

The previous prime is 210120111053. The next prime is 210120111107. The reversal of 210120111102 is 201111021012.

It is a super-2 number, since 2×210120111102² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210120111107) 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, 3943158 + ... + 3996089.

It is an arithmetic number, because the mean of its divisors is an integer number (14362099632).

Almost surely, 2^210120111102 is an apocalyptic number.

210120111102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

210120111102 is an abundant number, since it is smaller than the sum of its proper divisors (249467077122).

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

210120111102 is a wasteful number, since it uses less digits than its factorization.

210120111102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7939664.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 210120111102 its reverse (201111021012), we get a palindrome (411231132114).

The spelling of 210120111102 in words is "two hundred ten billion, one hundred twenty million, one hundred eleven thousand, one hundred two".