232021221329 has 16 divisors (see below), whose sum is σ = 250675188048. Its totient is φ = 213935634432.

The previous prime is 232021221259. The next prime is 232021221353. The reversal of 232021221329 is 923122120232.

It can be written as a sum of positive squares in 8 ways, for example, as 136107131329 + 95914090000 = 368927^2 + 309700^2 .

It is a cyclic number.

It is not a de Polignac number, because 232021221329 - 2⁸ = 232021221073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (232021221529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 419789 + ... + 800165.

It is an arithmetic number, because the mean of its divisors is an integer number (15667199253).

Almost surely, 2^232021221329 is an apocalyptic number.

It is an amenable number.

232021221329 is a deficient number, since it is larger than the sum of its proper divisors (18653966719).

232021221329 is a wasteful number, since it uses less digits than its factorization.

232021221329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381124.

The product of its (nonzero) digits is 5184, while the sum is 29.

The spelling of 232021221329 in words is "two hundred thirty-two billion, twenty-one million, two hundred twenty-one thousand, three hundred twenty-nine".