20122320210 has 32 divisors (see below), whose sum is σ = 48330725760. Its totient is φ = 5361823488.

The previous prime is 20122320173. The next prime is 20122320217. The reversal of 20122320210 is 1202322102.

It is a happy number.

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 20122320210.

It is not an unprimeable number, because it can be changed into a prime (20122320217) 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, 218295 + ... + 296474.

It is an arithmetic number, because the mean of its divisors is an integer number (1510335180).

Almost surely, 2^20122320210 is an apocalyptic number.

20122320210 is an abundant number, since it is smaller than the sum of its proper divisors (28208405550).

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

20122320210 is a wasteful number, since it uses less digits than its factorization.

20122320210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516082.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20122320210 its reverse (1202322102), we get a palindrome (21324642312).

The spelling of 20122320210 in words is "twenty billion, one hundred twenty-two million, three hundred twenty thousand, two hundred ten".