102122012221001 has 4 divisors (see below), whose sum is σ = 102231939038100. Its totient is φ = 102012085403904.

The previous prime is 102122012220989. The next prime is 102122012221013. The reversal of 102122012221001 is 100122210221201.

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

It is an interprime number because it is at equal distance from previous prime (102122012220989) and next prime (102122012221013).

It can be written as a sum of positive squares in 2 ways, for example, as 52349551619401 + 49772460601600 = 7235299^2 + 7054960^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102122012221001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102122012221081) 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, 54963407156 + ... + 54963409013.

It is an arithmetic number, because the mean of its divisors is an integer number (25557984759525).

Almost surely, 2^{102122012221001} is an apocalyptic number.

It is an amenable number.

102122012221001 is a deficient number, since it is larger than the sum of its proper divisors (109926817099).

102122012221001 is an equidigital number, since it uses as much as digits as its factorization.

102122012221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109926817098.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 102122012221001 its reverse (100122210221201), we get a palindrome (202244222442202).

The spelling of 102122012221001 in words is "one hundred two trillion, one hundred twenty-two billion, twelve million, two hundred twenty-one thousand, one".