12010001002021 has 16 divisors (see below), whose sum is σ = 13114909656576. Its totient is φ = 10907275750000.

The previous prime is 12010001001959. The next prime is 12010001002037. The reversal of 12010001002021 is 12020010001021.

It is a cyclic number.

It is not a de Polignac number, because 12010001002021 - 2¹⁷ = 12010000870949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12010001001989 and 12010001002007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12010001002721) 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, 177232896 + ... + 177300646.

It is an arithmetic number, because the mean of its divisors is an integer number (819681853536).

Almost surely, 2^{12010001002021} is an apocalyptic number.

12010001002021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12010001002021 is a deficient number, since it is larger than the sum of its proper divisors (1104908654555).

12010001002021 is a wasteful number, since it uses less digits than its factorization.

12010001002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83624.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 12010001002021 its reverse (12020010001021), we get a palindrome (24030011003042).

The spelling of 12010001002021 in words is "twelve trillion, ten billion, one million, two thousand, twenty-one".