12020002021 has 16 divisors (see below), whose sum is σ = 12482136576. Its totient is φ = 11566800000.

The previous prime is 12020002019. The next prime is 12020002037.

12020002021 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 12020002021 - 2¹ = 12020002019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12020001989 and 12020002007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020006021) 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, 1116856 + ... + 1127566.

It is an arithmetic number, because the mean of its divisors is an integer number (780133536).

Almost surely, 2^12020002021 is an apocalyptic number.

It is an amenable number.

12020002021 is a deficient number, since it is larger than the sum of its proper divisors (462134555).

12020002021 is a wasteful number, since it uses less digits than its factorization.

12020002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11124.

The product of its (nonzero) digits is 16, while the sum is 10.

It can be divided in two parts, 1202000 and 2021, that added together give a palindrome (1204021).

The spelling of 12020002021 in words is "twelve billion, twenty million, two thousand, twenty-one".