120964821 has 16 divisors (see below), whose sum is σ = 168030720. Its totient is φ = 77319360.

The previous prime is 120964817. The next prime is 120964841. The reversal of 120964821 is 128469021.

It is not a de Polignac number, because 120964821 - 2² = 120964817 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120964841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4171 + ... + 16103.

It is an arithmetic number, because the mean of its divisors is an integer number (10501920).

Almost surely, 2^120964821 is an apocalyptic number.

It is an amenable number.

120964821 is a deficient number, since it is larger than the sum of its proper divisors (47065899).

120964821 is a wasteful number, since it uses less digits than its factorization.

120964821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12076.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 120964821 is about 10998.4008383037. The cubic root of 120964821 is about 494.5608062325.

The spelling of 120964821 in words is "one hundred twenty million, nine hundred sixty-four thousand, eight hundred twenty-one".