20331000222997 has 2 divisors, whose sum is σ = 20331000222998. Its totient is φ = 20331000222996.

The previous prime is 20331000222943. The next prime is 20331000223031. The reversal of 20331000222997 is 79922200013302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12732151149796 + 7598849073201 = 3568214^2 + 2756601^2 .

It is a cyclic number.

It is not a de Polignac number, because 20331000222997 - 2³⁵ = 20296640484629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20331000220997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165500111498 + 10165500111499.

It is an arithmetic number, because the mean of its divisors is an integer number (10165500111499).

Almost surely, 2^{20331000222997} is an apocalyptic number.

It is an amenable number.

20331000222997 is a deficient number, since it is larger than the sum of its proper divisors (1).

20331000222997 is an equidigital number, since it uses as much as digits as its factorization.

20331000222997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 40.

The spelling of 20331000222997 in words is "twenty trillion, three hundred thirty-one billion, two hundred twenty-two thousand, nine hundred ninety-seven".