102202121123 has 4 divisors (see below), whose sum is σ = 102590722608. Its totient is φ = 101813519640.

The previous prime is 102202121033. The next prime is 102202121191. The reversal of 102202121123 is 321121202201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321121202201 = 83 ⋅3868930147.

It is a cyclic number.

It is not a de Polignac number, because 102202121123 - 2³⁰ = 101128379299 is a prime.

It is a super-2 number, since 2×102202121123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102202121023) 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, 194300348 + ... + 194300873.

It is an arithmetic number, because the mean of its divisors is an integer number (25647680652).

Almost surely, 2^102202121123 is an apocalyptic number.

102202121123 is a deficient number, since it is larger than the sum of its proper divisors (388601485).

102202121123 is an equidigital number, since it uses as much as digits as its factorization.

102202121123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388601484.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 102202121123 its reverse (321121202201), we get a palindrome (423323323324).

The spelling of 102202121123 in words is "one hundred two billion, two hundred two million, one hundred twenty-one thousand, one hundred twenty-three".