100102000021220 has 36 divisors (see below), whose sum is σ = 217712923031604. Its totient is φ = 38660082760320.

The previous prime is 100102000021189. The next prime is 100102000021229. The reversal of 100102000021220 is 22120000201001.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 764379506944 + 99337620514276 = 874288^2 + 9966826^2 .

It is not an unprimeable number, because it can be changed into a prime (100102000021229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2975666891 + ... + 2975700530.

Almost surely, 2^{100102000021220} is an apocalyptic number.

100102000021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100102000021220 is an abundant number, since it is smaller than the sum of its proper divisors (117610923010384).

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

100102000021220 is a wasteful number, since it uses less digits than its factorization.

100102000021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5951367488 (or 5951367457 counting only the distinct ones).

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

Adding to 100102000021220 its reverse (22120000201001), we get a palindrome (122222000222221).

The spelling of 100102000021220 in words is "one hundred trillion, one hundred two billion, twenty-one thousand, two hundred twenty".