102112220101 has 4 divisors (see below), whose sum is σ = 102119691052. Its totient is φ = 102104749152.

The previous prime is 102112220057. The next prime is 102112220113. The reversal of 102112220101 is 101022211201.

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 69313199076 + 32799021025 = 263274^2 + 181105^2 .

It is a cyclic number.

It is not a de Polignac number, because 102112220101 - 2¹¹ = 102112218053 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 (102112220141) 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, 3714936 + ... + 3742321.

It is an arithmetic number, because the mean of its divisors is an integer number (25529922763).

Almost surely, 2^102112220101 is an apocalyptic number.

It is an amenable number.

102112220101 is a deficient number, since it is larger than the sum of its proper divisors (7470951).

102112220101 is an equidigital number, since it uses as much as digits as its factorization.

102112220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7470950.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 102112220101 its reverse (101022211201), we get a palindrome (203134431302).

The spelling of 102112220101 in words is "one hundred two billion, one hundred twelve million, two hundred twenty thousand, one hundred one".