101222220120 has 128 divisors (see below), whose sum is σ = 347261091840. Its totient is φ = 23122275840.

The previous prime is 101222220101. The next prime is 101222220133. The reversal of 101222220120 is 21022222101.

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 101222220120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1360690 + ... + 1433150.

It is an arithmetic number, because the mean of its divisors is an integer number (2712977280).

Almost surely, 2^101222220120 is an apocalyptic number.

101222220120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101222220120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173630545920).

101222220120 is an abundant number, since it is smaller than the sum of its proper divisors (246038871720).

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

101222220120 is a wasteful number, since it uses less digits than its factorization.

101222220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74145 (or 74141 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 101222220120 its reverse (21022222101), we get a palindrome (122244442221).

The spelling of 101222220120 in words is "one hundred one billion, two hundred twenty-two million, two hundred twenty thousand, one hundred twenty".