1231422030111 has 48 divisors (see below), whose sum is σ = 2057251660800. Its totient is φ = 649424164032.

The previous prime is 1231422030107. The next prime is 1231422030151. The reversal of 1231422030111 is 1110302241321.

It is not a de Polignac number, because 1231422030111 - 2² = 1231422030107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231422030151) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11103150 + ... + 11213508.

It is an arithmetic number, because the mean of its divisors is an integer number (42859409600).

Almost surely, 2^{1231422030111} is an apocalyptic number.

1231422030111 is a deficient number, since it is larger than the sum of its proper divisors (825829630689).

1231422030111 is a wasteful number, since it uses less digits than its factorization.

1231422030111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116228 (or 116221 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1231422030111 its reverse (1110302241321), we get a palindrome (2341724271432).

The spelling of 1231422030111 in words is "one trillion, two hundred thirty-one billion, four hundred twenty-two million, thirty thousand, one hundred eleven".