102101011121 has 4 divisors (see below), whose sum is σ = 102103255332. Its totient is φ = 102098766912.

The previous prime is 102101011097. The next prime is 102101011141. The reversal of 102101011121 is 121110101201.

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 49412399521 + 52688611600 = 222289^2 + 229540^2 .

It is a cyclic number.

It is not a de Polignac number, because 102101011121 - 2⁶ = 102101011057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102101011141) 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, 1052420 + ... + 1145333.

It is an arithmetic number, because the mean of its divisors is an integer number (25525813833).

Almost surely, 2^102101011121 is an apocalyptic number.

It is an amenable number.

102101011121 is a deficient number, since it is larger than the sum of its proper divisors (2244211).

102101011121 is an equidigital number, since it uses as much as digits as its factorization.

102101011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2244210.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 102101011121 its reverse (121110101201), we get a palindrome (223211112322).

The spelling of 102101011121 in words is "one hundred two billion, one hundred one million, eleven thousand, one hundred twenty-one".