213121011201023 has 8 divisors (see below), whose sum is σ = 216374900844960. Its totient is φ = 209874126703360.

The previous prime is 213121011201019. The next prime is 213121011201041. The reversal of 213121011201023 is 320102110121312.

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 213121011201023 - 2² = 213121011201019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213121011200986 and 213121011201004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213121011201013) 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, 1751225258 + ... + 1751346951.

It is an arithmetic number, because the mean of its divisors is an integer number (27046862605620).

Almost surely, 2^{213121011201023} is an apocalyptic number.

213121011201023 is a deficient number, since it is larger than the sum of its proper divisors (3253889643937).

213121011201023 is an equidigital number, since it uses as much as digits as its factorization.

213121011201023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3502573137.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 213121011201023 its reverse (320102110121312), we get a palindrome (533223121322335).

The spelling of 213121011201023 in words is "two hundred thirteen trillion, one hundred twenty-one billion, eleven million, two hundred one thousand, twenty-three".