902021201 has 8 divisors (see below), whose sum is σ = 916224384. Its totient is φ = 887839920.

The previous prime is 902021189. The next prime is 902021233. The reversal of 902021201 is 102120209.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-902021201 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 902021201.

It is not an unprimeable number, because it can be changed into a prime (902021101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90611 + ... + 100071.

It is an arithmetic number, because the mean of its divisors is an integer number (114528048).

Almost surely, 2^902021201 is an apocalyptic number.

It is an amenable number.

902021201 is a deficient number, since it is larger than the sum of its proper divisors (14203183).

902021201 is a wasteful number, since it uses less digits than its factorization.

902021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10951.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 902021201 is about 30033.6677913304. The cubic root of 902021201 is about 966.2116027868.

The spelling of 902021201 in words is "nine hundred two million, twenty-one thousand, two hundred one".