101221099974 has 48 divisors (see below), whose sum is σ = 221525378880. Its totient is φ = 33401496960.

The previous prime is 101221099961. The next prime is 101221099999. The reversal of 101221099974 is 479990122101.

It is a happy number.

It is a super-2 number, since 2×101221099974² (a number of 23 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 23 ways as a sum of consecutive naturals, for example, 699762 + ... + 831930.

It is an arithmetic number, because the mean of its divisors is an integer number (4615112060).

Almost surely, 2^101221099974 is an apocalyptic number.

101221099974 is an abundant number, since it is smaller than the sum of its proper divisors (120304278906).

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

101221099974 is a wasteful number, since it uses less digits than its factorization.

101221099974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132605 (or 132602 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The spelling of 101221099974 in words is "one hundred one billion, two hundred twenty-one million, ninety-nine thousand, nine hundred seventy-four".