31020011223222 has 128 divisors (see below), whose sum is σ = 71680470220800. Its totient is φ = 8765942777856.

The previous prime is 31020011223191. The next prime is 31020011223239. The reversal of 31020011223222 is 22232211002013.

It is a super-2 number, since 2×31020011223222² (a number of 28 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13854403179 + ... + 13854405417.

It is an arithmetic number, because the mean of its divisors is an integer number (560003673600).

Almost surely, 2^{31020011223222} is an apocalyptic number.

31020011223222 is an abundant number, since it is smaller than the sum of its proper divisors (40660458997578).

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

31020011223222 is a wasteful number, since it uses less digits than its factorization.

31020011223222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5930.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 31020011223222 its reverse (22232211002013), we get a palindrome (53252222225235).

The spelling of 31020011223222 in words is "thirty-one trillion, twenty billion, eleven million, two hundred twenty-three thousand, two hundred twenty-two".