20122211231 has 8 divisors (see below), whose sum is σ = 21238068720. Its totient is φ = 19012033152.

The previous prime is 20122211203. The next prime is 20122211233. The reversal of 20122211231 is 13211222102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20122211231 - 2⁶ = 20122211167 is a prime.

It is a super-2 number, since 2×20122211231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122211233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1412570 + ... + 1426743.

It is an arithmetic number, because the mean of its divisors is an integer number (2654758590).

Almost surely, 2^20122211231 is an apocalyptic number.

20122211231 is a deficient number, since it is larger than the sum of its proper divisors (1115857489).

20122211231 is a wasteful number, since it uses less digits than its factorization.

20122211231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2839705.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20122211231 its reverse (13211222102), we get a palindrome (33333433333).

The spelling of 20122211231 in words is "twenty billion, one hundred twenty-two million, two hundred eleven thousand, two hundred thirty-one".