2122997905969 has 2 divisors, whose sum is σ = 2122997905970. Its totient is φ = 2122997905968.

The previous prime is 2122997905961. The next prime is 2122997905993. The reversal of 2122997905969 is 9695097992212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1894303537569 + 228694368400 = 1376337^2 + 478220^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122997905969 - 2³ = 2122997905961 is a prime.

It is a super-2 number, since 2×2122997905969² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2122997905898 and 2122997905907.

It is not a weakly prime, because it can be changed into another prime (2122997905961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061498952984 + 1061498952985.

It is an arithmetic number, because the mean of its divisors is an integer number (1061498952985).

Almost surely, 2^{2122997905969} is an apocalyptic number.

It is an amenable number.

2122997905969 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122997905969 is an equidigital number, since it uses as much as digits as its factorization.

2122997905969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 99202320, while the sum is 70.

The spelling of 2122997905969 in words is "two trillion, one hundred twenty-two billion, nine hundred ninety-seven million, nine hundred five thousand, nine hundred sixty-nine".