203232132121 has 4 divisors (see below), whose sum is σ = 203532327972. Its totient is φ = 202931936272.

The previous prime is 203232132119. The next prime is 203232132127. The reversal of 203232132121 is 121231232302.

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 135027586521 + 68204545600 = 367461^2 + 261160^2 .

It is a cyclic number.

It is not a de Polignac number, because 203232132121 - 2¹ = 203232132119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203232132092 and 203232132101.

It is not an unprimeable number, because it can be changed into a prime (203232132127) 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, 150096910 + ... + 150098263.

It is an arithmetic number, because the mean of its divisors is an integer number (50883081993).

Almost surely, 2^203232132121 is an apocalyptic number.

It is an amenable number.

203232132121 is a deficient number, since it is larger than the sum of its proper divisors (300195851).

203232132121 is an equidigital number, since it uses as much as digits as its factorization.

203232132121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300195850.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 203232132121 its reverse (121231232302), we get a palindrome (324463364423).

The spelling of 203232132121 in words is "two hundred three billion, two hundred thirty-two million, one hundred thirty-two thousand, one hundred twenty-one".