1210200021323 has 4 divisors (see below), whose sum is σ = 1211065069200. Its totient is φ = 1209334973448.

The previous prime is 1210200021319. The next prime is 1210200021341. The reversal of 1210200021323 is 3231200020121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1210200021323 - 2² = 1210200021319 is a prime.

It is a super-2 number, since 2×1210200021323² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210200021343) 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, 432521840 + ... + 432524637.

It is an arithmetic number, because the mean of its divisors is an integer number (302766267300).

Almost surely, 2^{1210200021323} is an apocalyptic number.

1210200021323 is a deficient number, since it is larger than the sum of its proper divisors (865047877).

1210200021323 is an equidigital number, since it uses as much as digits as its factorization.

1210200021323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865047876.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1210200021323 its reverse (3231200020121), we get a palindrome (4441400041444).

The spelling of 1210200021323 in words is "one trillion, two hundred ten billion, two hundred million, twenty-one thousand, three hundred twenty-three".