121112112100210 has 256 divisors, whose sum is σ = 282766088014848. Its totient is φ = 36262862438400.

The previous prime is 121112112100181. The next prime is 121112112100289. The reversal of 121112112100210 is 12001211211121.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 407992440 + ... + 408289180.

It is an arithmetic number, because the mean of its divisors is an integer number (1104555031308).

Almost surely, 2^{121112112100210} is an apocalyptic number.

121112112100210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121112112100210 is an abundant number, since it is smaller than the sum of its proper divisors (161653975914638).

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

121112112100210 is a wasteful number, since it uses less digits than its factorization.

121112112100210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297029.

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

Adding to 121112112100210 its reverse (12001211211121), we get a palindrome (133113323311331).

It can be divided in two parts, 1211121 and 12100210, that added together give a palindrome (13311331).

The spelling of 121112112100210 in words is "one hundred twenty-one trillion, one hundred twelve billion, one hundred twelve million, one hundred thousand, two hundred ten".