100220201212021 has 16 divisors (see below), whose sum is σ = 110415350880000. Its totient is φ = 90205783624000.

The previous prime is 100220201211979. The next prime is 100220201212057. The reversal of 100220201212021 is 120212102022001.

It is a happy number.

It is not a de Polignac number, because 100220201212021 - 2⁹ = 100220201211509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100220201211986 and 100220201212004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100220201212421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73482420 + ... + 74833858.

It is an arithmetic number, because the mean of its divisors is an integer number (6900959430000).

Almost surely, 2^{100220201212021} is an apocalyptic number.

100220201212021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100220201212021 is a deficient number, since it is larger than the sum of its proper divisors (10195149667979).

100220201212021 is a wasteful number, since it uses less digits than its factorization.

100220201212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418300.

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

Adding to 100220201212021 its reverse (120212102022001), we get a palindrome (220432303234022).

The spelling of 100220201212021 in words is "one hundred trillion, two hundred twenty billion, two hundred one million, two hundred twelve thousand, twenty-one".