102211221121210 has 32 divisors (see below), whose sum is σ = 184052077558272. Its totient is φ = 40868516208960.

The previous prime is 102211221121157. The next prime is 102211221121223. The reversal of 102211221121210 is 12121122112201.

It is a happy 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, 1585055629 + ... + 1585120111.

It is an arithmetic number, because the mean of its divisors is an integer number (5751627423696).

Almost surely, 2^{102211221121210} is an apocalyptic number.

102211221121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102211221121210 is a deficient number, since it is larger than the sum of its proper divisors (81840856437062).

102211221121210 is a wasteful number, since it uses less digits than its factorization.

102211221121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123958.

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

Adding to 102211221121210 its reverse (12121122112201), we get a palindrome (114332343233411).

Subtracting from 102211221121210 its reverse (12121122112201), we obtain a palindrome (90090099009009).

The spelling of 102211221121210 in words is "one hundred two trillion, two hundred eleven billion, two hundred twenty-one million, one hundred twenty-one thousand, two hundred ten".