101001212112120 has 256 divisors, whose sum is σ = 316761528545280. Its totient is φ = 25733290905600.

The previous prime is 101001212112061. The next prime is 101001212112139. The reversal of 101001212112120 is 21211212100101.

It is a happy number.

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 101001212112120.

It is a congruent number.

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, 457163122 + ... + 457383998.

It is an arithmetic number, because the mean of its divisors is an integer number (1237349720880).

Almost surely, 2^{101001212112120} is an apocalyptic number.

101001212112120 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 101001212112120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158380764272640).

101001212112120 is an abundant number, since it is smaller than the sum of its proper divisors (215760316433160).

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

101001212112120 is a wasteful number, since it uses less digits than its factorization.

101001212112120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222486 (or 222482 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 101001212112120 its reverse (21211212100101), we get a palindrome (122212424212221).

The spelling of 101001212112120 in words is "one hundred one trillion, one billion, two hundred twelve million, one hundred twelve thousand, one hundred twenty".