102020010021953 has 2 divisors, whose sum is σ = 102020010021954. Its totient is φ = 102020010021952.

The previous prime is 102020010021931. The next prime is 102020010022027. The reversal of 102020010021953 is 359120010020201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78815634685489 + 23204375336464 = 8877817^2 + 4817092^2 .

It is a cyclic number.

It is not a de Polignac number, because 102020010021953 - 2¹⁸ = 102020009759809 is a prime.

It is not a weakly prime, because it can be changed into another prime (102020010521953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51010005010976 + 51010005010977.

It is an arithmetic number, because the mean of its divisors is an integer number (51010005010977).

Almost surely, 2^{102020010021953} is an apocalyptic number.

It is an amenable number.

102020010021953 is a deficient number, since it is larger than the sum of its proper divisors (1).

102020010021953 is an equidigital number, since it uses as much as digits as its factorization.

102020010021953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

The spelling of 102020010021953 in words is "one hundred two trillion, twenty billion, ten million, twenty-one thousand, nine hundred fifty-three".