12101002220021 has 16 divisors (see below), whose sum is σ = 14216754955200. Its totient is φ = 10154549387520.

The previous prime is 12101002219991. The next prime is 12101002220023. The reversal of 12101002220021 is 12002220010121.

It is a cyclic number.

It is not a de Polignac number, because 12101002220021 - 2²² = 12100998025717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12101002219978 and 12101002220005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101002220023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10784330 + ... + 11853428.

It is an arithmetic number, because the mean of its divisors is an integer number (888547184700).

Almost surely, 2^{12101002220021} is an apocalyptic number.

12101002220021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12101002220021 is a deficient number, since it is larger than the sum of its proper divisors (2115752735179).

12101002220021 is a wasteful number, since it uses less digits than its factorization.

12101002220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148276.

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

Adding to 12101002220021 its reverse (12002220010121), we get a palindrome (24103222230142).

The spelling of 12101002220021 in words is "twelve trillion, one hundred one billion, two million, two hundred twenty thousand, twenty-one".