100120012221220 has 48 divisors (see below), whose sum is σ = 210833463879360. Its totient is φ = 39937391754624.

The previous prime is 100120012221101. The next prime is 100120012221233. The reversal of 100120012221220 is 22122210021001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 100120012221194 and 100120012221203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7414347 + ... + 15975373.

It is an arithmetic number, because the mean of its divisors is an integer number (4392363830820).

Almost surely, 2^{100120012221220} is an apocalyptic number.

100120012221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100120012221220 is an abundant number, since it is smaller than the sum of its proper divisors (110713451658140).

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

100120012221220 is a wasteful number, since it uses less digits than its factorization.

100120012221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8562652 (or 8562650 counting only the distinct ones).

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

Adding to 100120012221220 its reverse (22122210021001), we get a palindrome (122242222242221).

It can be divided in two parts, 10012001 and 2221220, that added together give a palindrome (12233221).

The spelling of 100120012221220 in words is "one hundred trillion, one hundred twenty billion, twelve million, two hundred twenty-one thousand, two hundred twenty".