101000200021220 has 12 divisors (see below), whose sum is σ = 212100420044604. Its totient is φ = 40400080008480.

The previous prime is 101000200021219. The next prime is 101000200021229. The reversal of 101000200021220 is 22120002000101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 49327220475556 + 51672979545664 = 7023334^2 + 7188392^2 .

It is not an unprimeable number, because it can be changed into a prime (101000200021229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2525005000511 + ... + 2525005000550.

It is an arithmetic number, because the mean of its divisors is an integer number (17675035003717).

Almost surely, 2^{101000200021220} is an apocalyptic number.

101000200021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101000200021220 is an abundant number, since it is smaller than the sum of its proper divisors (111100220023384).

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

101000200021220 is a wasteful number, since it uses less digits than its factorization.

101000200021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5050010001070 (or 5050010001068 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 101000200021220 its reverse (22120002000101), we get a palindrome (123120202021321).

The spelling of 101000200021220 in words is "one hundred one trillion, two hundred million, twenty-one thousand, two hundred twenty".