100221020212220 has 24 divisors (see below), whose sum is σ = 210482769714000. Its totient is φ = 40084860033792.

The previous prime is 100221020212199. The next prime is 100221020212309. The reversal of 100221020212220 is 22212020122001.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221521565 + ... + 221973524.

It is an arithmetic number, because the mean of its divisors is an integer number (8770115404750).

Almost surely, 2^{100221020212220} is an apocalyptic number.

100221020212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100221020212220 is an abundant number, since it is smaller than the sum of its proper divisors (110261749501780).

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

100221020212220 is a wasteful number, since it uses less digits than its factorization.

100221020212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443506397 (or 443506395 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 100221020212220 its reverse (22212020122001), we get a palindrome (122433040334221).

The spelling of 100221020212220 in words is "one hundred trillion, two hundred twenty-one billion, twenty million, two hundred twelve thousand, two hundred twenty".