20331211020331 has 2 divisors, whose sum is σ = 20331211020332. Its totient is φ = 20331211020330.

The previous prime is 20331211020311. The next prime is 20331211020371. The reversal of 20331211020331 is 13302011213302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20331211020331 - 2¹⁷ = 20331210889259 is a prime.

It is a super-2 number, since 2×20331211020331² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20331211020311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165605510165 + 10165605510166.

It is an arithmetic number, because the mean of its divisors is an integer number (10165605510166).

Almost surely, 2^{20331211020331} is an apocalyptic number.

20331211020331 is a deficient number, since it is larger than the sum of its proper divisors (1).

20331211020331 is an equidigital number, since it uses as much as digits as its factorization.

20331211020331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 20331211020331 its reverse (13302011213302), we get a palindrome (33633222233633).

The spelling of 20331211020331 in words is "twenty trillion, three hundred thirty-one billion, two hundred eleven million, twenty thousand, three hundred thirty-one".