20013213122 has 16 divisors (see below), whose sum is σ = 34315733760. Its totient is φ = 8575249248.

The previous prime is 20013213043. The next prime is 20013213137. The reversal of 20013213122 is 22131231002.

It is a self number, because there is not a number n which added to its sum of digits gives 20013213122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84938 + ... + 217349.

It is an arithmetic number, because the mean of its divisors is an integer number (2144733360).

Almost surely, 2^20013213122 is an apocalyptic number.

20013213122 is a deficient number, since it is larger than the sum of its proper divisors (14302520638).

20013213122 is a wasteful number, since it uses less digits than its factorization.

20013213122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307025.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20013213122 its reverse (22131231002), we get a palindrome (42144444124).

It can be divided in two parts, 2001 and 3213122, that added together give a palindrome (3215123).

The spelling of 20013213122 in words is "twenty billion, thirteen million, two hundred thirteen thousand, one hundred twenty-two".