123012132111 has 96 divisors (see below), whose sum is σ = 210151065600. Its totient is φ = 70964308800.

The previous prime is 123012131993. The next prime is 123012132143. The reversal of 123012132111 is 111231210321.

123012132111 is a `hidden beast` number, since 12 + 301 + 21 + 321 + 11 = 666.

It is not a de Polignac number, because 123012132111 - 2³⁵ = 88652393743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123012132211) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6717610 + ... + 6735896.

It is an arithmetic number, because the mean of its divisors is an integer number (2189073600).

Almost surely, 2^123012132111 is an apocalyptic number.

123012132111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123012132111 is a deficient number, since it is larger than the sum of its proper divisors (87138933489).

123012132111 is a wasteful number, since it uses less digits than its factorization.

123012132111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18418 (or 18401 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 123012132111 its reverse (111231210321), we get a palindrome (234243342432).

It can be divided in two parts, 12301 and 2132111, that added together give a palindrome (2144412).

The spelling of 123012132111 in words is "one hundred twenty-three billion, twelve million, one hundred thirty-two thousand, one hundred eleven".