999214043121 has 72 divisors (see below), whose sum is σ = 1741682560800. Its totient is φ = 570799861632.

The previous prime is 999214043089. The next prime is 999214043123. The reversal of 999214043121 is 121340412999.

999214043121 is a `hidden beast` number, since 99 + 92 + 1 + 40 + 431 + 2 + 1 = 666.

It is not a de Polignac number, because 999214043121 - 2⁵ = 999214043089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (999214043123) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 44008830 + ... + 44031528.

Almost surely, 2^999214043121 is an apocalyptic number.

It is an amenable number.

999214043121 is a deficient number, since it is larger than the sum of its proper divisors (742468517679).

999214043121 is a wasteful number, since it uses less digits than its factorization.

999214043121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26425 (or 26406 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The spelling of 999214043121 in words is "nine hundred ninety-nine billion, two hundred fourteen million, forty-three thousand, one hundred twenty-one".