102021112101 has 4 divisors (see below), whose sum is σ = 136028149472. Its totient is φ = 68014074732.

The previous prime is 102021112057. The next prime is 102021112117. The reversal of 102021112101 is 101211120201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 102021112101 - 2³¹ = 99873628453 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021112601) 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, 17003518681 + ... + 17003518686.

It is an arithmetic number, because the mean of its divisors is an integer number (34007037368).

Almost surely, 2^102021112101 is an apocalyptic number.

It is an amenable number.

102021112101 is a deficient number, since it is larger than the sum of its proper divisors (34007037371).

102021112101 is an equidigital number, since it uses as much as digits as its factorization.

102021112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34007037370.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 102021112101 its reverse (101211120201), we get a palindrome (203232232302).

The spelling of 102021112101 in words is "one hundred two billion, twenty-one million, one hundred twelve thousand, one hundred one".