102133311123 has 4 divisors (see below), whose sum is σ = 136177748168. Its totient is φ = 68088874080.

The previous prime is 102133311121. The next prime is 102133311139. The reversal of 102133311123 is 321113331201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 102133311123 - 2¹ = 102133311121 is a prime.

It is a super-2 number, since 2×102133311123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102133311123.

It is not an unprimeable number, because it can be changed into a prime (102133311121) 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, 17022218518 + ... + 17022218523.

It is an arithmetic number, because the mean of its divisors is an integer number (34044437042).

Almost surely, 2^102133311123 is an apocalyptic number.

102133311123 is a deficient number, since it is larger than the sum of its proper divisors (34044437045).

102133311123 is an equidigital number, since it uses as much as digits as its factorization.

102133311123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34044437044.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 102133311123 its reverse (321113331201), we get a palindrome (423246642324).

The spelling of 102133311123 in words is "one hundred two billion, one hundred thirty-three million, three hundred eleven thousand, one hundred twenty-three".