233753400221 has 8 divisors (see below), whose sum is σ = 270003927744. Its totient is φ = 200002909120.

The previous prime is 233753400157. The next prime is 233753400239. The reversal of 233753400221 is 122004357332.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 233753400221 - 2⁶ = 233753400157 is a prime.

It is a super-2 number, since 2×233753400221² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233753460221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 625008905 + ... + 625009278.

It is an arithmetic number, because the mean of its divisors is an integer number (33750490968).

Almost surely, 2^233753400221 is an apocalyptic number.

It is an amenable number.

233753400221 is a deficient number, since it is larger than the sum of its proper divisors (36250527523).

233753400221 is a wasteful number, since it uses less digits than its factorization.

233753400221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250018211.

The product of its (nonzero) digits is 30240, while the sum is 32.

Adding to 233753400221 its reverse (122004357332), we get a palindrome (355757757553).

The spelling of 233753400221 in words is "two hundred thirty-three billion, seven hundred fifty-three million, four hundred thousand, two hundred twenty-one".