20133131222 has 16 divisors (see below), whose sum is σ = 30912068880. Its totient is φ = 9829260672.

The previous prime is 20133131219. The next prime is 20133131231. The reversal of 20133131222 is 22213133102.

It is a junction number, because it is equal to n+sod(n) for n = 20133131194 and 20133131203.

It is a congruent number.

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, 239498 + ... + 312450.

It is an arithmetic number, because the mean of its divisors is an integer number (1932004305).

Almost surely, 2^20133131222 is an apocalyptic number.

20133131222 is a deficient number, since it is larger than the sum of its proper divisors (10778937658).

20133131222 is a wasteful number, since it uses less digits than its factorization.

20133131222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76207.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20133131222 its reverse (22213133102), we get a palindrome (42346264324).

The spelling of 20133131222 in words is "twenty billion, one hundred thirty-three million, one hundred thirty-one thousand, two hundred twenty-two".