12100222010021 has 4 divisors (see below), whose sum is σ = 12107031365772. Its totient is φ = 12093412654272.

The previous prime is 12100222010011. The next prime is 12100222010027. The reversal of 12100222010021 is 12001022200121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3550533729796 + 8549688280225 = 1884286^2 + 2923985^2 .

It is a cyclic number.

It is not a de Polignac number, because 12100222010021 - 2¹⁸ = 12100221747877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12100222009978 and 12100222010005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100222010027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3404675210 + ... + 3404678763.

It is an arithmetic number, because the mean of its divisors is an integer number (3026757841443).

Almost surely, 2^{12100222010021} is an apocalyptic number.

It is an amenable number.

12100222010021 is a deficient number, since it is larger than the sum of its proper divisors (6809355751).

12100222010021 is an equidigital number, since it uses as much as digits as its factorization.

12100222010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6809355750.

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

Adding to 12100222010021 its reverse (12001022200121), we get a palindrome (24101244210142).

The spelling of 12100222010021 in words is "twelve trillion, one hundred billion, two hundred twenty-two million, ten thousand, twenty-one".