100521222155220 has 48 divisors (see below), whose sum is σ = 281459861242560. Its totient is φ = 26805617412096.

The previous prime is 100521222155177. The next prime is 100521222155227. The reversal of 100521222155220 is 22551222125001.

It is a super-2 number, since 2×100521222155220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100521222155227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66731316 + ... + 68221044.

It is an arithmetic number, because the mean of its divisors is an integer number (5863747109220).

Almost surely, 2^{100521222155220} is an apocalyptic number.

100521222155220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100521222155220 is an abundant number, since it is smaller than the sum of its proper divisors (180938639087340).

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

100521222155220 is a wasteful number, since it uses less digits than its factorization.

100521222155220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2614344 (or 2614342 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 30.

The spelling of 100521222155220 in words is "one hundred trillion, five hundred twenty-one billion, two hundred twenty-two million, one hundred fifty-five thousand, two hundred twenty".