101220132120 has 64 divisors (see below), whose sum is σ = 305186400000. Its totient is φ = 26856390528.

The previous prime is 101220132109. The next prime is 101220132131. The reversal of 101220132120 is 21231022101.

It is an interprime number because it is at equal distance from previous prime (101220132109) and next prime (101220132131).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 101220132120.

It is a congruent 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, 2095470 + ... + 2143229.

It is an arithmetic number, because the mean of its divisors is an integer number (4768537500).

Almost surely, 2^101220132120 is an apocalyptic number.

101220132120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101220132120 is an abundant number, since it is smaller than the sum of its proper divisors (203966267880).

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

101220132120 is a wasteful number, since it uses less digits than its factorization.

101220132120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4238912 (or 4238908 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 101220132120 its reverse (21231022101), we get a palindrome (122451154221).

The spelling of 101220132120 in words is "one hundred one billion, two hundred twenty million, one hundred thirty-two thousand, one hundred twenty".