21202122200969 has 2 divisors, whose sum is σ = 21202122200970. Its totient is φ = 21202122200968.

The previous prime is 21202122200923. The next prime is 21202122200981. The reversal of 21202122200969 is 96900222120212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17940197234569 + 3261924966400 = 4235587^2 + 1806080^2 .

It is a cyclic number.

It is not a de Polignac number, because 21202122200969 - 2¹² = 21202122196873 is a prime.

It is a super-2 number, since 2×21202122200969² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21201122200969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601061100484 + 10601061100485.

It is an arithmetic number, because the mean of its divisors is an integer number (10601061100485).

Almost surely, 2^{21202122200969} is an apocalyptic number.

It is an amenable number.

21202122200969 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202122200969 is an equidigital number, since it uses as much as digits as its factorization.

21202122200969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 21202122200969 in words is "twenty-one trillion, two hundred two billion, one hundred twenty-two million, two hundred thousand, nine hundred sixty-nine".