102101020122001 has 4 divisors (see below), whose sum is σ = 102104215104052. Its totient is φ = 102097825139952.

The previous prime is 102101020121993. The next prime is 102101020122061. The reversal of 102101020122001 is 100221020101201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49263764004225 + 52837256117776 = 7018815^2 + 7268924^2 .

It is a cyclic number.

It is not a de Polignac number, because 102101020122001 - 2³ = 102101020121993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102101020122061) 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, 1597443090 + ... + 1597507003.

It is an arithmetic number, because the mean of its divisors is an integer number (25526053776013).

Almost surely, 2^{102101020122001} is an apocalyptic number.

It is an amenable number.

102101020122001 is a deficient number, since it is larger than the sum of its proper divisors (3194982051).

102101020122001 is an equidigital number, since it uses as much as digits as its factorization.

102101020122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3194982050.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 102101020122001 its reverse (100221020101201), we get a palindrome (202322040223202).

The spelling of 102101020122001 in words is "one hundred two trillion, one hundred one billion, twenty million, one hundred twenty-two thousand, one".