2002196121 has 4 divisors (see below), whose sum is σ = 2669594832. Its totient is φ = 1334797412.

The previous prime is 2002196111. The next prime is 2002196137. The reversal of 2002196121 is 1216912002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2002196121 - 2²⁶ = 1935087257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2002196091 and 2002196100.

It is not an unprimeable number, because it can be changed into a prime (2002196111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333699351 + ... + 333699356.

It is an arithmetic number, because the mean of its divisors is an integer number (667398708).

Almost surely, 2^2002196121 is an apocalyptic number.

It is an amenable number.

2002196121 is a deficient number, since it is larger than the sum of its proper divisors (667398711).

2002196121 is an equidigital number, since it uses as much as digits as its factorization.

2002196121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667398710.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 2002196121 is about 44745.9061926340. The cubic root of 2002196121 is about 1260.3820377179.

The spelling of 2002196121 in words is "two billion, two million, one hundred ninety-six thousand, one hundred twenty-one".