10202102002121 has 4 divisors (see below), whose sum is σ = 10203211056000. Its totient is φ = 10200992948244.

The previous prime is 10202102002117. The next prime is 10202102002129. The reversal of 10202102002121 is 12120020120201.

10202102002121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10202102002121 - 2² = 10202102002117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10202102002096 and 10202102002105.

It is not an unprimeable number, because it can be changed into a prime (10202102002129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 554513141 + ... + 554531538.

It is an arithmetic number, because the mean of its divisors is an integer number (2550802764000).

Almost surely, 2^{10202102002121} is an apocalyptic number.

It is an amenable number.

10202102002121 is a deficient number, since it is larger than the sum of its proper divisors (1109053879).

10202102002121 is an equidigital number, since it uses as much as digits as its factorization.

10202102002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109053878.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 10202102002121 its reverse (12120020120201), we get a palindrome (22322122122322).

The spelling of 10202102002121 in words is "ten trillion, two hundred two billion, one hundred two million, two thousand, one hundred twenty-one".