12211021220994 has 32 divisors (see below), whose sum is σ = 27580448666880. Its totient is φ = 4003613514000.

The previous prime is 12211021220989. The next prime is 12211021221041. The reversal of 12211021220994 is 49902212011221.

12211021220994 is a `hidden beast` number, since 1 + 221 + 10 + 212 + 209 + 9 + 4 = 666.

It is a Curzon 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, 1853521482 + ... + 1853528069.

It is an arithmetic number, because the mean of its divisors is an integer number (861889020840).

Almost surely, 2^{12211021220994} is an apocalyptic number.

12211021220994 is an abundant number, since it is smaller than the sum of its proper divisors (15369427445886).

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

12211021220994 is a wasteful number, since it uses less digits than its factorization.

12211021220994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3707049623 (or 3707049617 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The spelling of 12211021220994 in words is "twelve trillion, two hundred eleven billion, twenty-one million, two hundred twenty thousand, nine hundred ninety-four".