102021101012101 has 4 divisors (see below), whose sum is σ = 102923942614092. Its totient is φ = 101118259410112.

The previous prime is 102021101012099. The next prime is 102021101012191. The reversal of 102021101012101 is 101210101120201.

It is a happy number.

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 1633245660225 + 100387855351876 = 1277985^2 + 10019374^2 .

It is a cyclic number.

It is not a de Polignac number, because 102021101012101 - 2¹ = 102021101012099 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 (102021101012191) 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, 451420800826 + ... + 451420801051.

It is an arithmetic number, because the mean of its divisors is an integer number (25730985653523).

Almost surely, 2^{102021101012101} is an apocalyptic number.

It is an amenable number.

102021101012101 is a deficient number, since it is larger than the sum of its proper divisors (902841601991).

102021101012101 is an equidigital number, since it uses as much as digits as its factorization.

102021101012101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902841601990.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 102021101012101 its reverse (101210101120201), we get a palindrome (203231202132302).

The spelling of 102021101012101 in words is "one hundred two trillion, twenty-one billion, one hundred one million, twelve thousand, one hundred one".