90202110201001 has 2 divisors, whose sum is σ = 90202110201002. Its totient is φ = 90202110201000.

The previous prime is 90202110200947. The next prime is 90202110201029. The reversal of 90202110201001 is 10010201120209.

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., 86298526090000 + 3903584111001 = 9289700^2 + 1975749^2 .

It is an emirp because it is prime and its reverse (10010201120209) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90202110201001 - 2²⁵ = 90202076646569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90202110201001.

It is not a weakly prime, because it can be changed into another prime (90202110201101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45101055100500 + 45101055100501.

It is an arithmetic number, because the mean of its divisors is an integer number (45101055100501).

Almost surely, 2^{90202110201001} is an apocalyptic number.

It is an amenable number.

90202110201001 is a deficient number, since it is larger than the sum of its proper divisors (1).

90202110201001 is an equidigital number, since it uses as much as digits as its factorization.

90202110201001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 90202110201001 in words is "ninety trillion, two hundred two billion, one hundred ten million, two hundred one thousand, one".