2002220120121 has 16 divisors (see below), whose sum is σ = 2877064626240. Its totient is φ = 1231243220160.

The previous prime is 2002220120071. The next prime is 2002220120129. The reversal of 2002220120121 is 1210210222002.

It is not a de Polignac number, because 2002220120121 - 2³⁴ = 1985040250937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2002220120121.

It is not an unprimeable number, because it can be changed into a prime (2002220120129) 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, 18533751 + ... + 18641468.

It is an arithmetic number, because the mean of its divisors is an integer number (179816539140).

Almost surely, 2^{2002220120121} is an apocalyptic number.

It is an amenable number.

2002220120121 is a deficient number, since it is larger than the sum of its proper divisors (874844506119).

2002220120121 is a wasteful number, since it uses less digits than its factorization.

2002220120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37176616.

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

Adding to 2002220120121 its reverse (1210210222002), we get a palindrome (3212430342123).

The spelling of 2002220120121 in words is "two trillion, two billion, two hundred twenty million, one hundred twenty thousand, one hundred twenty-one".