2111961156312 has 192 divisors, whose sum is σ = 6343550419680. Its totient is φ = 583920949248.

The previous prime is 2111961156293. The next prime is 2111961156341. The reversal of 2111961156312 is 2136511691112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4317858 + ... + 4782030.

Almost surely, 2^{2111961156312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2111961156312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3171775209840).

2111961156312 is an abundant number, since it is smaller than the sum of its proper divisors (4231589263368).

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

2111961156312 is a wasteful number, since it uses less digits than its factorization.

2111961156312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464322 (or 464311 counting only the distinct ones).

The product of its digits is 19440, while the sum is 39.

The spelling of 2111961156312 in words is "two trillion, one hundred eleven billion, nine hundred sixty-one million, one hundred fifty-six thousand, three hundred twelve".