102100020121121 has 4 divisors (see below), whose sum is σ = 111381840132144. Its totient is φ = 92818200110100.

The previous prime is 102100020121081. The next prime is 102100020121153. The reversal of 102100020121121 is 121121020001201.

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 102100020121121 - 2¹⁰ = 102100020120097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102100020121096 and 102100020121105.

It is not an unprimeable number, because it can be changed into a prime (102100020127121) 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, 4640910005495 + ... + 4640910005516.

It is an arithmetic number, because the mean of its divisors is an integer number (27845460033036).

Almost surely, 2^{102100020121121} is an apocalyptic number.

102100020121121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102100020121121 is a deficient number, since it is larger than the sum of its proper divisors (9281820011023).

102100020121121 is an equidigital number, since it uses as much as digits as its factorization.

102100020121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9281820011022.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 102100020121121 its reverse (121121020001201), we get a palindrome (223221040122322).

The spelling of 102100020121121 in words is "one hundred two trillion, one hundred billion, twenty million, one hundred twenty-one thousand, one hundred twenty-one".