102110221121212 has 48 divisors (see below), whose sum is σ = 189119584080000. Its totient is φ = 48160976536064.

The previous prime is 102110221121203. The next prime is 102110221121327. The reversal of 102110221121212 is 212121122011201.

It is a happy number.

It is a super-4 number, since 4×102110221121212⁴ (a number of 57 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 102110221121212.

It is a congruent number.

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, 13355587 + ... + 19559962.

It is an arithmetic number, because the mean of its divisors is an integer number (3939991335000).

Almost surely, 2^{102110221121212} is an apocalyptic number.

It is an amenable number.

102110221121212 is a deficient number, since it is larger than the sum of its proper divisors (87009362958788).

102110221121212 is a wasteful number, since it uses less digits than its factorization.

102110221121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32916198 (or 32916196 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 102110221121212 its reverse (212121122011201), we get a palindrome (314231343132413).

The spelling of 102110221121212 in words is "one hundred two trillion, one hundred ten billion, two hundred twenty-one million, one hundred twenty-one thousand, two hundred twelve".