213023441021 has 8 divisors (see below), whose sum is σ = 213165008640. Its totient is φ = 212881922512.

The previous prime is 213023440967. The next prime is 213023441027. The reversal of 213023441021 is 120144320312.

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 213023441021 - 2⁶ = 213023440957 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 (213023441027) 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, 12564476 + ... + 12581418.

It is an arithmetic number, because the mean of its divisors is an integer number (26645626080).

Almost surely, 2^213023441021 is an apocalyptic number.

It is an amenable number.

213023441021 is a deficient number, since it is larger than the sum of its proper divisors (141567619).

213023441021 is a wasteful number, since it uses less digits than its factorization.

213023441021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24555.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 213023441021 its reverse (120144320312), we get a palindrome (333167761333).

The spelling of 213023441021 in words is "two hundred thirteen billion, twenty-three million, four hundred forty-one thousand, twenty-one".