12000121002021 has 16 divisors (see below), whose sum is σ = 16018573655808. Its totient is φ = 7990879780800.

The previous prime is 12000121001989. The next prime is 12000121002073. The reversal of 12000121002021 is 12020012100021.

It is not a de Polignac number, because 12000121002021 - 2⁵ = 12000121001989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12000121001988 and 12000121002006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000121002091) 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, 8470516 + ... + 9785186.

It is an arithmetic number, because the mean of its divisors is an integer number (1001160853488).

Almost surely, 2^{12000121002021} is an apocalyptic number.

It is an amenable number.

12000121002021 is a deficient number, since it is larger than the sum of its proper divisors (4018452653787).

12000121002021 is a wasteful number, since it uses less digits than its factorization.

12000121002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318172.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12000121002021 its reverse (12020012100021), we get a palindrome (24020133102042).

The spelling of 12000121002021 in words is "twelve trillion, one hundred twenty-one million, two thousand, twenty-one".