201021216313469 has 2 divisors, whose sum is σ = 201021216313470. Its totient is φ = 201021216313468.

The previous prime is 201021216313387. The next prime is 201021216313487. The reversal of 201021216313469 is 964313612120102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142208606265625 + 58812610047844 = 11925125^2 + 7668938^2 .

It is a cyclic number.

It is not a de Polignac number, because 201021216313469 - 2³⁶ = 200952496836733 is a prime.

It is a super-2 number, since 2×201021216313469² (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 (201021216313499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510608156734 + 100510608156735.

It is an arithmetic number, because the mean of its divisors is an integer number (100510608156735).

Almost surely, 2^{201021216313469} is an apocalyptic number.

It is an amenable number.

201021216313469 is a deficient number, since it is larger than the sum of its proper divisors (1).

201021216313469 is an equidigital number, since it uses as much as digits as its factorization.

201021216313469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 201021216313469 in words is "two hundred one trillion, twenty-one billion, two hundred sixteen million, three hundred thirteen thousand, four hundred sixty-nine".