233013220210021 has 4 divisors (see below), whose sum is σ = 233046550673344. Its totient is φ = 232979889746700.

The previous prime is 233013220210009. The next prime is 233013220210033. The reversal of 233013220210021 is 120012022310332.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (233013220210009) and next prime (233013220210033).

It is a cyclic number.

It is not a de Polignac number, because 233013220210021 - 2¹⁹ = 233013219685733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 233013220209974 and 233013220210001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233013220210321) 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, 16665221175 + ... + 16665235156.

It is an arithmetic number, because the mean of its divisors is an integer number (58261637668336).

Almost surely, 2^{233013220210021} is an apocalyptic number.

It is an amenable number.

233013220210021 is a deficient number, since it is larger than the sum of its proper divisors (33330463323).

233013220210021 is an equidigital number, since it uses as much as digits as its factorization.

233013220210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33330463322.

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

Adding to 233013220210021 its reverse (120012022310332), we get a palindrome (353025242520353).

The spelling of 233013220210021 in words is "two hundred thirty-three trillion, thirteen billion, two hundred twenty million, two hundred ten thousand, twenty-one".