20122221320331 has 16 divisors (see below), whose sum is σ = 28898042095104. Its totient is φ = 12380935672224.

The previous prime is 20122221320317. The next prime is 20122221320371. The reversal of 20122221320331 is 13302312222102.

It is not a de Polignac number, because 20122221320331 - 2¹⁹ = 20122220796043 is a prime.

It is a super-2 number, since 2×20122221320331² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20122221320371) 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, 40788241 + ... + 41278626.

It is an arithmetic number, because the mean of its divisors is an integer number (1806127630944).

Almost surely, 2^{20122221320331} is an apocalyptic number.

20122221320331 is a deficient number, since it is larger than the sum of its proper divisors (8775820774773).

20122221320331 is a wasteful number, since it uses less digits than its factorization.

20122221320331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82073170.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 20122221320331 its reverse (13302312222102), we get a palindrome (33424533542433).

The spelling of 20122221320331 in words is "twenty trillion, one hundred twenty-two billion, two hundred twenty-one million, three hundred twenty thousand, three hundred thirty-one".