1213312300111 has 4 divisors (see below), whose sum is σ = 1214466737224. Its totient is φ = 1212157863000.

The previous prime is 1213312300091. The next prime is 1213312300121. The reversal of 1213312300111 is 1110032133121.

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 1213312300111 - 2⁹ = 1213312299599 is a prime.

It is a super-2 number, since 2×1213312300111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213312300121) 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, 577216980 + ... + 577219081.

It is an arithmetic number, because the mean of its divisors is an integer number (303616684306).

Almost surely, 2^{1213312300111} is an apocalyptic number.

1213312300111 is a deficient number, since it is larger than the sum of its proper divisors (1154437113).

1213312300111 is a wasteful number, since it uses less digits than its factorization.

1213312300111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154437112.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1213312300111 its reverse (1110032133121), we get a palindrome (2323344433232).

The spelling of 1213312300111 in words is "one trillion, two hundred thirteen billion, three hundred twelve million, three hundred thousand, one hundred eleven".