233434001021 has 16 divisors (see below), whose sum is σ = 254290365504. Its totient is φ = 212997302784.

The previous prime is 233434001011. The next prime is 233434001023. The reversal of 233434001021 is 120100434332.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-233434001021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233434001023) 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, 930926 + ... + 1154768.

It is an arithmetic number, because the mean of its divisors is an integer number (15893147844).

Almost surely, 2^233434001021 is an apocalyptic number.

It is an amenable number.

233434001021 is a deficient number, since it is larger than the sum of its proper divisors (20856364483).

233434001021 is a wasteful number, since it uses less digits than its factorization.

233434001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224780.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 233434001021 its reverse (120100434332), we get a palindrome (353534435353).

The spelling of 233434001021 in words is "two hundred thirty-three billion, four hundred thirty-four million, one thousand, twenty-one".