102012210021101 has 4 divisors (see below), whose sum is σ = 102304508617500. Its totient is φ = 101719911424704.

The previous prime is 102012210021089. The next prime is 102012210021103. The reversal of 102012210021101 is 101120012210201.

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 79951584649225 + 22060625371876 = 8941565^2 + 4696874^2 .

It is a cyclic number.

It is not a de Polignac number, because 102012210021101 - 2²⁶ = 102012142912237 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 (102012210021103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146149297676 + ... + 146149298373.

It is an arithmetic number, because the mean of its divisors is an integer number (25576127154375).

Almost surely, 2^{102012210021101} is an apocalyptic number.

It is an amenable number.

102012210021101 is a deficient number, since it is larger than the sum of its proper divisors (292298596399).

102012210021101 is an equidigital number, since it uses as much as digits as its factorization.

102012210021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292298596398.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 102012210021101 its reverse (101120012210201), we get a palindrome (203132222231302).

The spelling of 102012210021101 in words is "one hundred two trillion, twelve billion, two hundred ten million, twenty-one thousand, one hundred one".