10002100202121 has 16 divisors (see below), whose sum is σ = 13388374461888. Its totient is φ = 6641963328000.

The previous prime is 10002100202069. The next prime is 10002100202137. The reversal of 10002100202121 is 12120200120001.

It is not a de Polignac number, because 10002100202121 - 2²² = 10002096007817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10002100202097 and 10002100202106.

It is not an unprimeable number, because it can be changed into a prime (10002100202161) 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, 243270 + ... + 4479216.

It is an arithmetic number, because the mean of its divisors is an integer number (836773403868).

Almost surely, 2^{10002100202121} is an apocalyptic number.

It is an amenable number.

10002100202121 is a deficient number, since it is larger than the sum of its proper divisors (3386274259767).

10002100202121 is a wasteful number, since it uses less digits than its factorization.

10002100202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4239032.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10002100202121 its reverse (12120200120001), we get a palindrome (22122300322122).

The spelling of 10002100202121 in words is "ten trillion, two billion, one hundred million, two hundred two thousand, one hundred twenty-one".