102010001200121 has 4 divisors (see below), whose sum is σ = 116582858514432. Its totient is φ = 87437143885812.

The previous prime is 102010001200067. The next prime is 102010001200123. The reversal of 102010001200121 is 121002100010201.

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 de Polignac number, because none of the positive numbers 2^k-102010001200121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102010001200123) 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, 7286428657145 + ... + 7286428657158.

It is an arithmetic number, because the mean of its divisors is an integer number (29145714628608).

Almost surely, 2^{102010001200121} is an apocalyptic number.

It is an amenable number.

102010001200121 is a deficient number, since it is larger than the sum of its proper divisors (14572857314311).

102010001200121 is an equidigital number, since it uses as much as digits as its factorization.

102010001200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14572857314310.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 102010001200121 its reverse (121002100010201), we get a palindrome (223012101210322).

The spelling of 102010001200121 in words is "one hundred two trillion, ten billion, one million, two hundred thousand, one hundred twenty-one".