20113122210 has 32 divisors (see below), whose sum is σ = 48296630592. Its totient is φ = 5360706240.

The previous prime is 20113122209. The next prime is 20113122217. The reversal of 20113122210 is 1222131102.

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 20113122210.

It is not an unprimeable number, because it can be changed into a prime (20113122217) by changing a digit.

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, 115669 + ... + 231528.

It is an arithmetic number, because the mean of its divisors is an integer number (1509269706).

Almost surely, 2^20113122210 is an apocalyptic number.

20113122210 is an abundant number, since it is smaller than the sum of its proper divisors (28183508382).

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

20113122210 is a wasteful number, since it uses less digits than its factorization.

20113122210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349138.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20113122210 its reverse (1222131102), we get a palindrome (21335253312).

The spelling of 20113122210 in words is "twenty billion, one hundred thirteen million, one hundred twenty-two thousand, two hundred ten".