20420222021331 has 16 divisors (see below), whose sum is σ = 30392888592000. Its totient is φ = 12088080688320.

The previous prime is 20420222021323. The next prime is 20420222021399. The reversal of 20420222021331 is 13312022202402.

It is not a de Polignac number, because 20420222021331 - 2³ = 20420222021323 is a prime.

It is a super-2 number, since 2×20420222021331² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20420222026331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7195284706 + ... + 7195287543.

It is an arithmetic number, because the mean of its divisors is an integer number (1899555537000).

Almost surely, 2^{20420222021331} is an apocalyptic number.

20420222021331 is a deficient number, since it is larger than the sum of its proper divisors (9972666570669).

20420222021331 is a wasteful number, since it uses less digits than its factorization.

20420222021331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14390572306.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20420222021331 its reverse (13312022202402), we get a palindrome (33732244223733).

The spelling of 20420222021331 in words is "twenty trillion, four hundred twenty billion, two hundred twenty-two million, twenty-one thousand, three hundred thirty-one".