2121111008 has 24 divisors (see below), whose sum is σ = 4179707280. Its totient is φ = 1059598080.

The previous prime is 2121111007. The next prime is 2121111019. The reversal of 2121111008 is 8001111212.

It is a super-2 number, since 2×2121111008² = 8998223816517552128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121111007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6773 + ... + 65483.

It is an arithmetic number, because the mean of its divisors is an integer number (174154470).

Almost surely, 2^2121111008 is an apocalyptic number.

It is an amenable number.

2121111008 is a deficient number, since it is larger than the sum of its proper divisors (2058596272).

2121111008 is a wasteful number, since it uses less digits than its factorization.

2121111008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59850 (or 59842 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

The square root of 2121111008 is about 46055.5209285488. The cubic root of 2121111008 is about 1284.8560267065.

The spelling of 2121111008 in words is "two billion, one hundred twenty-one million, one hundred eleven thousand, eight".