201021220999967 has 2 divisors, whose sum is σ = 201021220999968. Its totient is φ = 201021220999966.

The previous prime is 201021220999961. The next prime is 201021221000023. The reversal of 201021220999967 is 769999022120102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201021220999967 - 2⁴⁶ = 130652476822303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201021220999961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510610499983 + 100510610499984.

It is an arithmetic number, because the mean of its divisors is an integer number (100510610499984).

Almost surely, 2^{201021220999967} is an apocalyptic number.

201021220999967 is a deficient number, since it is larger than the sum of its proper divisors (1).

201021220999967 is an equidigital number, since it uses as much as digits as its factorization.

201021220999967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4408992, while the sum is 59.

The spelling of 201021220999967 in words is "two hundred one trillion, twenty-one billion, two hundred twenty million, nine hundred ninety-nine thousand, nine hundred sixty-seven".