20112210012210 has 32 divisors (see below), whose sum is σ = 48306405817152. Its totient is φ = 5359133582400.

The previous prime is 20112210012149. The next prime is 20112210012217. The reversal of 20112210012210 is 1221001221102.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20112210012210.

It is not an unprimeable number, because it can be changed into a prime (20112210012217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257611624 + ... + 257689683.

It is an arithmetic number, because the mean of its divisors is an integer number (1509575181786).

Almost surely, 2^{20112210012210} is an apocalyptic number.

20112210012210 is an abundant number, since it is smaller than the sum of its proper divisors (28194195804942).

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

20112210012210 is a wasteful number, since it uses less digits than its factorization.

20112210012210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515302618.

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

Adding to 20112210012210 its reverse (1221001221102), we get a palindrome (21333211233312).

The spelling of 20112210012210 in words is "twenty trillion, one hundred twelve billion, two hundred ten million, twelve thousand, two hundred ten".