20011022122 has 64 divisors (see below), whose sum is σ = 37558080000. Its totient is φ = 7785308160.

The previous prime is 20011022117. The next prime is 20011022149. The reversal of 20011022122 is 22122011002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

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, 5800254 + ... + 5803702.

It is an arithmetic number, because the mean of its divisors is an integer number (586845000).

Almost surely, 2^20011022122 is an apocalyptic number.

20011022122 is a deficient number, since it is larger than the sum of its proper divisors (17547057878).

20011022122 is a wasteful number, since it uses less digits than its factorization.

20011022122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3991.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20011022122 its reverse (22122011002), we get a palindrome (42133033124).

The spelling of 20011022122 in words is "twenty billion, eleven million, twenty-two thousand, one hundred twenty-two".