201936921 has 8 divisors (see below), whose sum is σ = 283420320. Its totient is φ = 127539072.

The previous prime is 201936919. The next prime is 201936937. The reversal of 201936921 is 129639102.

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

It is not a de Polignac number, because 201936921 - 2¹ = 201936919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201936961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1771320 + ... + 1771433.

It is an arithmetic number, because the mean of its divisors is an integer number (35427540).

Almost surely, 2^201936921 is an apocalyptic number.

It is an amenable number.

201936921 is a deficient number, since it is larger than the sum of its proper divisors (81483399).

201936921 is a wasteful number, since it uses less digits than its factorization.

201936921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3542775.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 201936921 is about 14210.4511188069. The cubic root of 201936921 is about 586.6853496045.

The spelling of 201936921 in words is "two hundred one million, nine hundred thirty-six thousand, nine hundred twenty-one".