2002101122121 has 16 divisors (see below), whose sum is σ = 2670419283840.
Its totient is φ = 1334258629760.
The previous prime is 2002101122089. The next prime is 2002101122123. The reversal of 2002101122121 is 1212211012002.
It is a cyclic number.
It is not a de Polignac number, because 2002101122121 - 25 = 2002101122089 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 2002101122121.
It is not an unprimeable number, because it can be changed into a prime (2002101122123) 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, 163257436 + ... + 163269698.
It is an arithmetic number, because the mean of its divisors is an integer number (166901205240).
Almost surely, 22002101122121 is an apocalyptic number.
It is an amenable number.
2002101122121 is a deficient number, since it is larger than the sum of its proper divisors (668318161719).
2002101122121 is a wasteful number, since it uses less digits than its factorization.
2002101122121 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 27216.
The product of its (nonzero) digits is 32, while the sum is 15.
Adding to 2002101122121 its reverse (1212211012002), we get a palindrome (3214312134123).
The spelling of 2002101122121 in words is "two trillion, two billion, one hundred one million, one hundred twenty-two thousand, one hundred twenty-one".