102111101101210 has 32 divisors (see below), whose sum is σ = 185696636306832. Its totient is φ = 40422969907200.

The previous prime is 102111101101189. The next prime is 102111101101241. The reversal of 102111101101210 is 12101101111201.

It can be written as a sum of positive squares in 8 ways, for example, as 741825631849 + 101369275469361 = 861293^2 + 10068231^2 .

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, 111767260 + ... + 112677160.

Almost surely, 2^{102111101101210} is an apocalyptic number.

102111101101210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102111101101210 is a deficient number, since it is larger than the sum of its proper divisors (83585535205622).

102111101101210 is a wasteful number, since it uses less digits than its factorization.

102111101101210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025698.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 102111101101210 its reverse (12101101111201), we get a palindrome (114212202212411).

Subtracting from 102111101101210 its reverse (12101101111201), we obtain a palindrome (90009999990009).

The spelling of 102111101101210 in words is "one hundred two trillion, one hundred eleven billion, one hundred one million, one hundred one thousand, two hundred ten".