1213122310111 has 8 divisors (see below), whose sum is σ = 1228786574400. Its totient is φ = 1197465753120.

The previous prime is 1213122310097. The next prime is 1213122310129. The reversal of 1213122310111 is 1110132213121.

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 1213122310111 - 2³⁵ = 1178762571743 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 (1213122310151) 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, 1609660 + ... + 2239921.

It is an arithmetic number, because the mean of its divisors is an integer number (153598321800).

Almost surely, 2^{1213122310111} is an apocalyptic number.

1213122310111 is a deficient number, since it is larger than the sum of its proper divisors (15664264289).

1213122310111 is an equidigital number, since it uses as much as digits as its factorization.

1213122310111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3853649.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1213122310111 its reverse (1110132213121), we get a palindrome (2323254523232).

The spelling of 1213122310111 in words is "one trillion, two hundred thirteen billion, one hundred twenty-two million, three hundred ten thousand, one hundred eleven".