100020122220 has 24 divisors (see below), whose sum is σ = 280056342384. Its totient is φ = 26672032576.

The previous prime is 100020122219. The next prime is 100020122243. The reversal of 100020122220 is 22221020001.

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 = 100020122196 and 100020122205.

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, 833500959 + ... + 833501078.

It is an arithmetic number, because the mean of its divisors is an integer number (11669014266).

Almost surely, 2^100020122220 is an apocalyptic number.

100020122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100020122220 is an abundant number, since it is smaller than the sum of its proper divisors (180036220164).

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

100020122220 is a wasteful number, since it uses less digits than its factorization.

100020122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667002049 (or 1667002047 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 100020122220 its reverse (22221020001), we get a palindrome (122241142221).

The spelling of 100020122220 in words is "one hundred billion, twenty million, one hundred twenty-two thousand, two hundred twenty".