213121301023 has 8 divisors (see below), whose sum is σ = 225793571328. Its totient is φ = 200464111104.

The previous prime is 213121301011. The next prime is 213121301053. The reversal of 213121301023 is 320103121312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213121301023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213121301053) 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, 3740986 + ... + 3797527.

It is an arithmetic number, because the mean of its divisors is an integer number (28224196416).

Almost surely, 2^213121301023 is an apocalyptic number.

213121301023 is a deficient number, since it is larger than the sum of its proper divisors (12672270305).

213121301023 is a wasteful number, since it uses less digits than its factorization.

213121301023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7540193.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 213121301023 its reverse (320103121312), we get a palindrome (533224422335).

The spelling of 213121301023 in words is "two hundred thirteen billion, one hundred twenty-one million, three hundred one thousand, twenty-three".