102020002012121 has 4 divisors (see below), whose sum is σ = 102108637983744. Its totient is φ = 101931366040500.

The previous prime is 102020002012087. The next prime is 102020002012129. The reversal of 102020002012121 is 121210200020201.

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 102020002012121 - 2³⁰ = 102018928270297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102020002012096 and 102020002012105.

It is not an unprimeable number, because it can be changed into a prime (102020002012129) 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, 44317984085 + ... + 44317986386.

It is an arithmetic number, because the mean of its divisors is an integer number (25527159495936).

Almost surely, 2^{102020002012121} is an apocalyptic number.

It is an amenable number.

102020002012121 is a deficient number, since it is larger than the sum of its proper divisors (88635971623).

102020002012121 is an equidigital number, since it uses as much as digits as its factorization.

102020002012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88635971622.

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

Adding to 102020002012121 its reverse (121210200020201), we get a palindrome (223230202032322).

The spelling of 102020002012121 in words is "one hundred two trillion, twenty billion, two million, twelve thousand, one hundred twenty-one".