811937121 has 8 divisors (see below), whose sum is σ = 1094747040. Its totient is φ = 535209312.

The previous prime is 811937107. The next prime is 811937143. The reversal of 811937121 is 121739118.

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

It is not a de Polignac number, because 811937121 - 2⁶ = 811937057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (811937101) 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, 1520215 + ... + 1520748.

It is an arithmetic number, because the mean of its divisors is an integer number (136843380).

Almost surely, 2^811937121 is an apocalyptic number.

It is an amenable number.

811937121 is a deficient number, since it is larger than the sum of its proper divisors (282809919).

811937121 is a wasteful number, since it uses less digits than its factorization.

811937121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3041055.

The product of its digits is 3024, while the sum is 33.

The square root of 811937121 is about 28494.5103660337. The cubic root of 811937121 is about 932.9122571534.

The spelling of 811937121 in words is "eight hundred eleven million, nine hundred thirty-seven thousand, one hundred twenty-one".