102211121210 has 24 divisors (see below), whose sum is σ = 202225972788. Its totient is φ = 37167680000.

The previous prime is 102211121197. The next prime is 102211121231. The reversal of 102211121210 is 12121112201.

It can be written as a sum of positive squares in 2 ways, for example, as 99035460601 + 3175660609 = 314699^2 + 56353^2 .

It is a super-2 number, since 2×102211121210² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42234791 + ... + 42237210.

Almost surely, 2^102211121210 is an apocalyptic number.

102211121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102211121210 is a deficient number, since it is larger than the sum of its proper divisors (100014851578).

102211121210 is a wasteful number, since it uses less digits than its factorization.

102211121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84472030 (or 84472019 counting only the distinct ones).

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

Adding to 102211121210 its reverse (12121112201), we get a palindrome (114332233411).

Subtracting from 102211121210 its reverse (12121112201), we obtain a palindrome (90090009009).

The spelling of 102211121210 in words is "one hundred two billion, two hundred eleven million, one hundred twenty-one thousand, two hundred ten".