220122100506 has 64 divisors (see below), whose sum is σ = 549026159616. Its totient is φ = 57158918400.

The previous prime is 220122100469. The next prime is 220122100529. The reversal of 220122100506 is 605001221022.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

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, 1674241 + ... + 1800923.

It is an arithmetic number, because the mean of its divisors is an integer number (8578533744).

Almost surely, 2^220122100506 is an apocalyptic number.

220122100506 is an abundant number, since it is smaller than the sum of its proper divisors (328904059110).

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

220122100506 is a wasteful number, since it uses less digits than its factorization.

220122100506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130467.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 220122100506 its reverse (605001221022), we get a palindrome (825123321528).

The spelling of 220122100506 in words is "two hundred twenty billion, one hundred twenty-two million, one hundred thousand, five hundred six".