12002201220021 has 16 divisors (see below), whose sum is σ = 16535181262848. Its totient is φ = 7735845034800.

The previous prime is 12002201220001. The next prime is 12002201220131. The reversal of 12002201220021 is 12002210220021.

It is not a de Polignac number, because 12002201220021 - 2⁹ = 12002201219509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002201220001) 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, 62491861 + ... + 62683626.

It is an arithmetic number, because the mean of its divisors is an integer number (1033448828928).

Almost surely, 2^{12002201220021} is an apocalyptic number.

It is an amenable number.

12002201220021 is a deficient number, since it is larger than the sum of its proper divisors (4532980042827).

12002201220021 is a wasteful number, since it uses less digits than its factorization.

12002201220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125176552.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12002201220021 its reverse (12002210220021), we get a palindrome (24004411440042).

Subtracting 12002201220021 from its reverse (12002210220021), we obtain a square (9000000 = 3000²).

The spelling of 12002201220021 in words is "twelve trillion, two billion, two hundred one million, two hundred twenty thousand, twenty-one".