20322231971 has 2 divisors, whose sum is σ = 20322231972. Its totient is φ = 20322231970.

The previous prime is 20322231961. The next prime is 20322232019. The reversal of 20322231971 is 17913222302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20322231971 - 2¹⁸ = 20321969827 is a prime.

It is a super-2 number, since 2×20322231971² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20322231961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161115985 + 10161115986.

It is an arithmetic number, because the mean of its divisors is an integer number (10161115986).

Almost surely, 2^20322231971 is an apocalyptic number.

20322231971 is a deficient number, since it is larger than the sum of its proper divisors (1).

20322231971 is an equidigital number, since it uses as much as digits as its factorization.

20322231971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The spelling of 20322231971 in words is "twenty billion, three hundred twenty-two million, two hundred thirty-one thousand, nine hundred seventy-one".