2002101212121 has 32 divisors (see below), whose sum is σ = 2754379407360. Its totient is φ = 1292784105600.

The previous prime is 2002101212119. The next prime is 2002101212131. The reversal of 2002101212121 is 1212121012002.

It is not a de Polignac number, because 2002101212121 - 2¹ = 2002101212119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2002101212121.

It is not an unprimeable number, because it can be changed into a prime (2002101212131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9327120 + ... + 9539358.

It is an arithmetic number, because the mean of its divisors is an integer number (86074356480).

Almost surely, 2^{2002101212121} is an apocalyptic number.

It is an amenable number.

2002101212121 is a deficient number, since it is larger than the sum of its proper divisors (752278195239).

2002101212121 is a wasteful number, since it uses less digits than its factorization.

2002101212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212837.

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

Adding to 2002101212121 its reverse (1212121012002), we get a palindrome (3214222224123).

The spelling of 2002101212121 in words is "two trillion, two billion, one hundred one million, two hundred twelve thousand, one hundred twenty-one".