102232121 has 4 divisors (see below), whose sum is σ = 102349044. Its totient is φ = 102115200.

The previous prime is 102232069. The next prime is 102232127. The reversal of 102232121 is 121232201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121232201 = 673 ⋅180137.

It can be written as a sum of positive squares in 2 ways, for example, as 66650896 + 35581225 = 8164^2 + 5965^2 .

It is a cyclic number.

It is not a de Polignac number, because 102232121 - 2⁶ = 102232057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 102232096 and 102232105.

It is not an unprimeable number, because it can be changed into a prime (102232127) 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, 57140 + ... + 58901.

It is an arithmetic number, because the mean of its divisors is an integer number (25587261).

Almost surely, 2^102232121 is an apocalyptic number.

It is an amenable number.

102232121 is a deficient number, since it is larger than the sum of its proper divisors (116923).

102232121 is an equidigital number, since it uses as much as digits as its factorization.

102232121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116922.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 102232121 is about 10110.9901097766. The cubic root of 102232121 is about 467.5870309913.

Adding to 102232121 its reverse (121232201), we get a palindrome (223464322).

The spelling of 102232121 in words is "one hundred two million, two hundred thirty-two thousand, one hundred twenty-one".