2002120010121 has 16 divisors (see below), whose sum is σ = 3328199497728. Its totient is φ = 1040062342800.

The previous prime is 2002120010101. The next prime is 2002120010123. The reversal of 2002120010121 is 1210100212002.

It is not a de Polignac number, because 2002120010121 - 2²¹ = 2002117912969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2002120010097 and 2002120010106.

It is not an unprimeable number, because it can be changed into a prime (2002120010123) 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, 4333592865 + ... + 4333593326.

It is an arithmetic number, because the mean of its divisors is an integer number (208012468608).

Almost surely, 2^{2002120010121} is an apocalyptic number.

2002120010121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2002120010121 is a deficient number, since it is larger than the sum of its proper divisors (1326079487607).

2002120010121 is a wasteful number, since it uses less digits than its factorization.

2002120010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8667186212.

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

Adding to 2002120010121 its reverse (1210100212002), we get a palindrome (3212220222123).

The spelling of 2002120010121 in words is "two trillion, two billion, one hundred twenty million, ten thousand, one hundred twenty-one".