102121022210101 has 4 divisors (see below), whose sum is σ = 105642436769100. Its totient is φ = 98599607651104.

The previous prime is 102121022210099. The next prime is 102121022210177. The reversal of 102121022210101 is 101012220121201.

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 57261153752100 + 44859868458001 = 7567110^2 + 6697751^2 .

It is a cyclic number.

It is not a de Polignac number, because 102121022210101 - 2¹ = 102121022210099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102121022210201) 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, 1760707279456 + ... + 1760707279513.

It is an arithmetic number, because the mean of its divisors is an integer number (26410609192275).

Almost surely, 2^{102121022210101} is an apocalyptic number.

It is an amenable number.

102121022210101 is a deficient number, since it is larger than the sum of its proper divisors (3521414558999).

102121022210101 is an equidigital number, since it uses as much as digits as its factorization.

102121022210101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3521414558998.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 102121022210101 its reverse (101012220121201), we get a palindrome (203133242331302).

The spelling of 102121022210101 in words is "one hundred two trillion, one hundred twenty-one billion, twenty-two million, two hundred ten thousand, one hundred one".