202121231000947 has 2 divisors, whose sum is σ = 202121231000948. Its totient is φ = 202121231000946.

The previous prime is 202121231000911. The next prime is 202121231000957. The reversal of 202121231000947 is 749000132121202.

202121231000947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202121231000947 is a prime.

It is a super-2 number, since 2×202121231000947² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (202121231000957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101060615500473 + 101060615500474.

It is an arithmetic number, because the mean of its divisors is an integer number (101060615500474).

Almost surely, 2^{202121231000947} is an apocalyptic number.

202121231000947 is a deficient number, since it is larger than the sum of its proper divisors (1).

202121231000947 is an equidigital number, since it uses as much as digits as its factorization.

202121231000947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The spelling of 202121231000947 in words is "two hundred two trillion, one hundred twenty-one billion, two hundred thirty-one million, nine hundred forty-seven", and thus it is an aban number.