2002122020121 has 16 divisors (see below), whose sum is σ = 2806818893760. Its totient is φ = 1267595622720.

The previous prime is 2002122020117. The next prime is 2002122020131. The reversal of 2002122020121 is 1210202212002.

It is not a de Polignac number, because 2002122020121 - 2² = 2002122020117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2002122020121.

It is not an unprimeable number, because it can be changed into a prime (2002122020131) 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, 188624995 + ... + 188635608.

It is an arithmetic number, because the mean of its divisors is an integer number (175426180860).

Almost surely, 2^{2002122020121} is an apocalyptic number.

It is an amenable number.

2002122020121 is a deficient number, since it is larger than the sum of its proper divisors (804696873639).

2002122020121 is a wasteful number, since it uses less digits than its factorization.

2002122020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377260696.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2002122020121 its reverse (1210202212002), we get a palindrome (3212324232123).

The spelling of 2002122020121 in words is "two trillion, two billion, one hundred twenty-two million, twenty thousand, one hundred twenty-one".