20102202002121 has 8 divisors (see below), whose sum is σ = 28379579297184. Its totient is φ = 12613146354240.

The previous prime is 20102202002117. The next prime is 20102202002161. The reversal of 20102202002121 is 12120020220102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20102202002121 - 2² = 20102202002117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20102202002121.

It is not an unprimeable number, because it can be changed into a prime (20102202002161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197080411735 + ... + 197080411836.

It is an arithmetic number, because the mean of its divisors is an integer number (3547447412148).

Almost surely, 2^{20102202002121} is an apocalyptic number.

It is an amenable number.

20102202002121 is a deficient number, since it is larger than the sum of its proper divisors (8277377295063).

20102202002121 is a wasteful number, since it uses less digits than its factorization.

20102202002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394160823591.

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

Adding to 20102202002121 its reverse (12120020220102), we get a palindrome (32222222222223).

The spelling of 20102202002121 in words is "twenty trillion, one hundred two billion, two hundred two million, two thousand, one hundred twenty-one".