2002122010021 has 16 divisors (see below), whose sum is σ = 2311869442176. Its totient is φ = 1698309236736.

The previous prime is 2002122009959. The next prime is 2002122010061. The reversal of 2002122010021 is 1200102212002.

It is a happy number.

It is not a de Polignac number, because 2002122010021 - 2²⁹ = 2001585139109 is a prime.

It is a super-4 number, since 4×2002122010021⁴ (a number of 50 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2002122009983 and 2002122010010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002122010061) 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, 12315750 + ... + 12477256.

It is an arithmetic number, because the mean of its divisors is an integer number (144491840136).

Almost surely, 2^{2002122010021} is an apocalyptic number.

It is an amenable number.

2002122010021 is a deficient number, since it is larger than the sum of its proper divisors (309747432155).

2002122010021 is a wasteful number, since it uses less digits than its factorization.

2002122010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179868.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2002122010021 its reverse (1200102212002), we get a palindrome (3202224222023).

The spelling of 2002122010021 in words is "two trillion, two billion, one hundred twenty-two million, ten thousand, twenty-one".