112121001999 has 12 divisors (see below), whose sum is σ = 162035679000. Its totient is φ = 74708971344.

The previous prime is 112121001953. The next prime is 112121002073. The reversal of 112121001999 is 999100121211.

It is not a de Polignac number, because 112121001999 - 2¹¹ = 112120999951 is a prime.

It is a super-2 number, since 2×112121001999² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112121001919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3178429 + ... + 3213510.

It is an arithmetic number, because the mean of its divisors is an integer number (13502973250).

Almost surely, 2^112121001999 is an apocalyptic number.

112121001999 is a deficient number, since it is larger than the sum of its proper divisors (49914677001).

112121001999 is a wasteful number, since it uses less digits than its factorization.

112121001999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6393894 (or 6393891 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 36.

The spelling of 112121001999 in words is "one hundred twelve billion, one hundred twenty-one million, one thousand, nine hundred ninety-nine".