1231022300111 has 4 divisors (see below), whose sum is σ = 1237271144472. Its totient is φ = 1224773455752.

The previous prime is 1231022300051. The next prime is 1231022300113. The reversal of 1231022300111 is 1110032201321.

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 1231022300111 - 2⁶ = 1231022300047 is a prime.

It is a super-2 number, since 2×1231022300111² (a number of 25 digits) contains 22 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 1231022300111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231022300113) 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, 3124421885 + ... + 3124422278.

It is an arithmetic number, because the mean of its divisors is an integer number (309317786118).

Almost surely, 2^{1231022300111} is an apocalyptic number.

1231022300111 is a deficient number, since it is larger than the sum of its proper divisors (6248844361).

1231022300111 is an equidigital number, since it uses as much as digits as its factorization.

1231022300111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6248844360.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1231022300111 its reverse (1110032201321), we get a palindrome (2341054501432).

The spelling of 1231022300111 in words is "one trillion, two hundred thirty-one billion, twenty-two million, three hundred thousand, one hundred eleven".