2111189331966 has 32 divisors (see below), whose sum is σ = 4960556754048. Its totient is φ = 590542470240.

The previous prime is 2111189331941. The next prime is 2111189332001. The reversal of 2111189331966 is 6691339811112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1230295956 + ... + 1230297671.

It is an arithmetic number, because the mean of its divisors is an integer number (155017398564).

Almost surely, 2^{2111189331966} is an apocalyptic number.

2111189331966 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2111189331966 is an abundant number, since it is smaller than the sum of its proper divisors (2849367422082).

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

2111189331966 is a wasteful number, since it uses less digits than its factorization.

2111189331966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2460593656.

The product of its digits is 419904, while the sum is 51.

It can be divided in two parts, 2111189 and 331966, that added together give a triangular number (2443155 = T₂₂₁₀).

The spelling of 2111189331966 in words is "two trillion, one hundred eleven billion, one hundred eighty-nine million, three hundred thirty-one thousand, nine hundred sixty-six".