200001695232421 has 2 divisors, whose sum is σ = 200001695232422. Its totient is φ = 200001695232420.

The previous prime is 200001695232377. The next prime is 200001695232457. The reversal of 200001695232421 is 124232596100002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199713847960225 + 287847272196 = 14132015^2 + 536514^2 .

It is a cyclic number.

It is not a de Polignac number, because 200001695232421 - 2²¹ = 200001693135269 is a prime.

It is a super-2 number, since 2×200001695232421² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200001695232491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100000847616210 + 100000847616211.

It is an arithmetic number, because the mean of its divisors is an integer number (100000847616211).

Almost surely, 2^{200001695232421} is an apocalyptic number.

It is an amenable number.

200001695232421 is a deficient number, since it is larger than the sum of its proper divisors (1).

200001695232421 is an equidigital number, since it uses as much as digits as its factorization.

200001695232421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 200001695232421 in words is "two hundred trillion, one billion, six hundred ninety-five million, two hundred thirty-two thousand, four hundred twenty-one".