2111121019990 has 16 divisors (see below), whose sum is σ = 3800035027152. Its totient is φ = 844444587744.

The previous prime is 2111121019949. The next prime is 2111121019991. The reversal of 2111121019990 is 999101211112.

It is a super-2 number, since 2×2111121019990² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111121019991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3170557 + ... + 3778183.

It is an arithmetic number, because the mean of its divisors is an integer number (237502189197).

Almost surely, 2^{2111121019990} is an apocalyptic number.

2111121019990 is a deficient number, since it is larger than the sum of its proper divisors (1688914007162).

2111121019990 is a wasteful number, since it uses less digits than its factorization.

2111121019990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955071.

The product of its (nonzero) digits is 2916, while the sum is 37.

The spelling of 2111121019990 in words is "two trillion, one hundred eleven billion, one hundred twenty-one million, nineteen thousand, nine hundred ninety".