902022001 has 4 divisors (see below), whose sum is σ = 926401012. Its totient is φ = 877642992.

The previous prime is 902021971. The next prime is 902022029. The reversal of 902022001 is 100220209.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 575280225 + 326741776 = 23985^2 + 18076^2 .

It is a cyclic number.

It is not a de Polignac number, because 902022001 - 2⁹ = 902021489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (902022041) 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, 12189450 + ... + 12189523.

It is an arithmetic number, because the mean of its divisors is an integer number (231600253).

Almost surely, 2^902022001 is an apocalyptic number.

It is an amenable number.

902022001 is a deficient number, since it is larger than the sum of its proper divisors (24379011).

902022001 is a wasteful number, since it uses less digits than its factorization.

902022001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24379010.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 902022001 is about 30033.6811097141. The cubic root of 902022001 is about 966.2118884302.

The spelling of 902022001 in words is "nine hundred two million, twenty-two thousand, one".