100221211020220 has 24 divisors (see below), whose sum is σ = 212121744274944. Its totient is φ = 39772827049536.

The previous prime is 100221211020191. The next prime is 100221211020379. The reversal of 100221211020220 is 22020112122001.

It is a happy number.

It is a super-2 number, since 2×100221211020220² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100221211020194 and 100221211020203.

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, 19728582307 + ... + 19728587386.

It is an arithmetic number, because the mean of its divisors is an integer number (8838406011456).

Almost surely, 2^{100221211020220} is an apocalyptic number.

100221211020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100221211020220 is an abundant number, since it is smaller than the sum of its proper divisors (111900533254724).

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

100221211020220 is a wasteful number, since it uses less digits than its factorization.

100221211020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39457169829 (or 39457169827 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 100221211020220 its reverse (22020112122001), we get a palindrome (122241323142221).

The spelling of 100221211020220 in words is "one hundred trillion, two hundred twenty-one billion, two hundred eleven million, twenty thousand, two hundred twenty".