902021202001 has 4 divisors (see below), whose sum is σ = 902023101504. Its totient is φ = 902019302500.

The previous prime is 902021201947. The next prime is 902021202007. The reversal of 902021202001 is 100202120209.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 902021202001 - 2⁹ = 902021201489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 902021202001.

It is not an unprimeable number, because it can be changed into a prime (902021202007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 471276 + ... + 1423426.

It is an arithmetic number, because the mean of its divisors is an integer number (225505775376).

Almost surely, 2^902021202001 is an apocalyptic number.

It is an amenable number.

902021202001 is a deficient number, since it is larger than the sum of its proper divisors (1899503).

902021202001 is an equidigital number, since it uses as much as digits as its factorization.

902021202001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899502.

The product of its (nonzero) digits is 144, while the sum is 19.

The spelling of 902021202001 in words is "nine hundred two billion, twenty-one million, two hundred two thousand, one".