101220003120 has 320 divisors, whose sum is σ = 327779913600. Its totient is φ = 25817186304.

The previous prime is 101220003119. The next prime is 101220003179. The reversal of 101220003120 is 21300022101.

It is a super-2 number, since 2×101220003120² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 101220003096 and 101220003105.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 149512222 + ... + 149512898.

It is an arithmetic number, because the mean of its divisors is an integer number (1024312230).

Almost surely, 2^101220003120 is an apocalyptic number.

101220003120 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 101220003120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163889956800).

101220003120 is an abundant number, since it is smaller than the sum of its proper divisors (226559910480).

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

101220003120 is a wasteful number, since it uses less digits than its factorization.

101220003120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992 (or 986 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 101220003120 its reverse (21300022101), we get a palindrome (122520025221).

The spelling of 101220003120 in words is "one hundred one billion, two hundred twenty million, three thousand, one hundred twenty".