20220320951 has 2 divisors, whose sum is σ = 20220320952. Its totient is φ = 20220320950.

The previous prime is 20220320941. The next prime is 20220320959. The reversal of 20220320951 is 15902302202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20220320951 is a prime.

It is a super-2 number, since 2×20220320951² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20220320951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20220320959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110160475 + 10110160476.

It is an arithmetic number, because the mean of its divisors is an integer number (10110160476).

Almost surely, 2^20220320951 is an apocalyptic number.

20220320951 is a deficient number, since it is larger than the sum of its proper divisors (1).

20220320951 is an equidigital number, since it uses as much as digits as its factorization.

20220320951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The spelling of 20220320951 in words is "twenty billion, two hundred twenty million, three hundred twenty thousand, nine hundred fifty-one".