2121111192 has 64 divisors (see below), whose sum is σ = 5397350400. Its totient is φ = 694488960.

The previous prime is 2121111191. The next prime is 2121111193. The reversal of 2121111192 is 2911111212.

It is an interprime number because it is at equal distance from previous prime (2121111191) and next prime (2121111193).

It is a super-2 number, since 2×2121111192² = 8998225377655321728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121111191) 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, 623817 + ... + 627207.

It is an arithmetic number, because the mean of its divisors is an integer number (84333600).

Almost surely, 2^2121111192 is an apocalyptic number.

It is an amenable number.

2121111192 is an abundant number, since it is smaller than the sum of its proper divisors (3276239208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121111192 is a wasteful number, since it uses less digits than its factorization.

2121111192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3856 (or 3852 counting only the distinct ones).

The product of its digits is 72, while the sum is 21.

The square root of 2121111192 is about 46055.5229261378. The cubic root of 2121111192 is about 1284.8560638590.

The spelling of 2121111192 in words is "two billion, one hundred twenty-one million, one hundred eleven thousand, one hundred ninety-two".