2112166211444 has 12 divisors (see below), whose sum is σ = 3823749176100. Its totient is φ = 1019666446848.

The previous prime is 2112166211429. The next prime is 2112166211459. The reversal of 2112166211444 is 4441126612112.

It is an interprime number because it is at equal distance from previous prime (2112166211429) and next prime (2112166211459).

It can be written as a sum of positive squares in 2 ways, for example, as 1715314090000 + 396852121444 = 1309700^2 + 629962^2 .

It is a super-2 number, since 2×2112166211444² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9104164589 + ... + 9104164820.

It is an arithmetic number, because the mean of its divisors is an integer number (318645764675).

Almost surely, 2^{2112166211444} is an apocalyptic number.

It is an amenable number.

2112166211444 is a deficient number, since it is larger than the sum of its proper divisors (1711582964656).

2112166211444 is a wasteful number, since it uses less digits than its factorization.

2112166211444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18208329442 (or 18208329440 counting only the distinct ones).

The product of its digits is 18432, while the sum is 35.

The spelling of 2112166211444 in words is "two trillion, one hundred twelve billion, one hundred sixty-six million, two hundred eleven thousand, four hundred forty-four".