1211432330023 has 4 divisors (see below), whose sum is σ = 1275191926360. Its totient is φ = 1147672733688.

The previous prime is 1211432329997. The next prime is 1211432330131. The reversal of 1211432330023 is 3200332341121.

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 1211432330023 - 2³³ = 1202842395431 is a prime.

It is a super-3 number, since 3×1211432330023³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1211432330023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211432331023) 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, 31879798140 + ... + 31879798177.

It is an arithmetic number, because the mean of its divisors is an integer number (318797981590).

Almost surely, 2^{1211432330023} is an apocalyptic number.

1211432330023 is a deficient number, since it is larger than the sum of its proper divisors (63759596337).

1211432330023 is an equidigital number, since it uses as much as digits as its factorization.

1211432330023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63759596336.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 1211432330023 its reverse (3200332341121), we get a palindrome (4411764671144).

The spelling of 1211432330023 in words is "one trillion, two hundred eleven billion, four hundred thirty-two million, three hundred thirty thousand, twenty-three".