91121424412 has 12 divisors (see below), whose sum is σ = 160218240616. Its totient is φ = 45344784240.

The previous prime is 91121424389. The next prime is 91121424461. The reversal of 91121424412 is 21442412119.

It is a super-4 number, since 4×91121424412⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

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, 53981043 + ... + 53982730.

Almost surely, 2^91121424412 is an apocalyptic number.

It is an amenable number.

91121424412 is a deficient number, since it is larger than the sum of its proper divisors (69096816204).

91121424412 is a wasteful number, since it uses less digits than its factorization.

91121424412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107963988 (or 107963986 counting only the distinct ones).

The product of its digits is 4608, while the sum is 31.

The spelling of 91121424412 in words is "ninety-one billion, one hundred twenty-one million, four hundred twenty-four thousand, four hundred twelve".