20102120221210 has 32 divisors (see below), whose sum is σ = 36643826707200. Its totient is φ = 7938634616640.

The previous prime is 20102120221177. The next prime is 20102120221247. The reversal of 20102120221210 is 1212202120102.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14085196 + ... + 15446584.

It is an arithmetic number, because the mean of its divisors is an integer number (1145119584600).

Almost surely, 2^{20102120221210} is an apocalyptic number.

20102120221210 is a deficient number, since it is larger than the sum of its proper divisors (16541706485990).

20102120221210 is a wasteful number, since it uses less digits than its factorization.

20102120221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380166.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20102120221210 its reverse (1212202120102), we get a palindrome (21314322341312).

The spelling of 20102120221210 in words is "twenty trillion, one hundred two billion, one hundred twenty million, two hundred twenty-one thousand, two hundred ten".