20111022120210 has 64 divisors (see below), whose sum is σ = 55162020114432. Its totient is φ = 4596775102656.

The previous prime is 20111022120169. The next prime is 20111022120283. The reversal of 20111022120210 is 1202122011102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20111022120210.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56982507 + ... + 57334353.

It is an arithmetic number, because the mean of its divisors is an integer number (861906564288).

Almost surely, 2^{20111022120210} is an apocalyptic number.

20111022120210 is an abundant number, since it is smaller than the sum of its proper divisors (35050997994222).

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

20111022120210 is a wasteful number, since it uses less digits than its factorization.

20111022120210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624047.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20111022120210 its reverse (1202122011102), we get a palindrome (21313144131312).

The spelling of 20111022120210 in words is "twenty trillion, one hundred eleven billion, twenty-two million, one hundred twenty thousand, two hundred ten".