101221099960 has 32 divisors (see below), whose sum is σ = 227785559760. Its totient is φ = 40481669376.

The previous prime is 101221099943. The next prime is 101221099961. The reversal of 101221099960 is 69990122101.

It is a super-2 number, since 2×101221099960² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101221099961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34132 + ... + 451228.

Almost surely, 2^101221099960 is an apocalyptic number.

101221099960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101221099960 is an abundant number, since it is smaller than the sum of its proper divisors (126564459800).

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

101221099960 is a wasteful number, since it uses less digits than its factorization.

101221099960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423175 (or 423171 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 40.

The spelling of 101221099960 in words is "one hundred one billion, two hundred twenty-one million, ninety-nine thousand, nine hundred sixty".