100120021002221 has 12 divisors (see below), whose sum is σ = 112608564854016. Its totient is φ = 88901498559720.

The previous prime is 100120021002203. The next prime is 100120021002347. The reversal of 100120021002221 is 122200120021001.

It is not a de Polignac number, because 100120021002221 - 2¹⁰ = 100120021001197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100120021002196 and 100120021002205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100120021008221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9621369101 + ... + 9621379506.

It is an arithmetic number, because the mean of its divisors is an integer number (9384047071168).

Almost surely, 2^{100120021002221} is an apocalyptic number.

100120021002221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100120021002221 is a deficient number, since it is larger than the sum of its proper divisors (12488543851795).

100120021002221 is a wasteful number, since it uses less digits than its factorization.

100120021002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19242748672 (or 19242748661 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 100120021002221 its reverse (122200120021001), we get a palindrome (222320141023222).

The spelling of 100120021002221 in words is "one hundred trillion, one hundred twenty billion, twenty-one million, two thousand, two hundred twenty-one".