210102111212 has 36 divisors (see below), whose sum is σ = 427735108584. Its totient is φ = 90038027520.

The previous prime is 210102111211. The next prime is 210102111277. The reversal of 210102111212 is 212111201012.

It is a super-2 number, since 2×210102111212² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (210102111211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4776383 + ... + 4820169.

It is an arithmetic number, because the mean of its divisors is an integer number (11881530794).

Almost surely, 2^210102111212 is an apocalyptic number.

It is an amenable number.

210102111212 is an abundant number, since it is smaller than the sum of its proper divisors (217632997372).

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

210102111212 is a wasteful number, since it uses less digits than its factorization.

210102111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68286 (or 68277 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 210102111212 its reverse (212111201012), we get a palindrome (422213312224).

The spelling of 210102111212 in words is "two hundred ten billion, one hundred two million, one hundred eleven thousand, two hundred twelve".