100201010021220 has 48 divisors (see below), whose sum is σ = 285856466333760. Its totient is φ = 26216113312896.

The previous prime is 100201010021179. The next prime is 100201010021221. The reversal of 100201010021220 is 22120010102001.

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 = 100201010021196 and 100201010021205.

It is not an unprimeable number, because it can be changed into a prime (100201010021221) 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, 15754872610 + ... + 15754878969.

It is an arithmetic number, because the mean of its divisors is an integer number (5955343048620).

Almost surely, 2^{100201010021220} is an apocalyptic number.

100201010021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100201010021220 is an abundant number, since it is smaller than the sum of its proper divisors (185655456312540).

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

100201010021220 is a wasteful number, since it uses less digits than its factorization.

100201010021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31509751644 (or 31509751642 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 100201010021220 its reverse (22120010102001), we get a palindrome (122321020123221).

The spelling of 100201010021220 in words is "one hundred trillion, two hundred one billion, ten million, twenty-one thousand, two hundred twenty".