2002011122121 has 48 divisors (see below), whose sum is σ = 2769867809280. Its totient is φ = 1285771468800.

The previous prime is 2002011122117. The next prime is 2002011122123. The reversal of 2002011122121 is 1212211102002.

It is not a de Polignac number, because 2002011122121 - 2² = 2002011122117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2002011122121.

It is not an unprimeable number, because it can be changed into a prime (2002011122123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 379237960 + ... + 379243238.

It is an arithmetic number, because the mean of its divisors is an integer number (57705579360).

Almost surely, 2^{2002011122121} is an apocalyptic number.

It is an amenable number.

2002011122121 is a deficient number, since it is larger than the sum of its proper divisors (767856687159).

2002011122121 is an equidigital number, since it uses as much as digits as its factorization.

2002011122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6098 (or 6037 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2002011122121 its reverse (1212211102002), we get a palindrome (3214222224123).

The spelling of 2002011122121 in words is "two trillion, two billion, eleven million, one hundred twenty-two thousand, one hundred twenty-one".