1211023233129 has 16 divisors (see below), whose sum is σ = 1672155378432. Its totient is φ = 779072378448.

The previous prime is 1211023233089. The next prime is 1211023233181. The reversal of 1211023233129 is 9213323201121.

It is not a de Polignac number, because 1211023233129 - 2¹³ = 1211023224937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1211023233096 and 1211023233105.

It is not an unprimeable number, because it can be changed into a prime (1211023233529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56542167 + ... + 56563580.

It is an arithmetic number, because the mean of its divisors is an integer number (104509711152).

Almost surely, 2^{1211023233129} is an apocalyptic number.

It is an amenable number.

1211023233129 is a deficient number, since it is larger than the sum of its proper divisors (461132145303).

1211023233129 is a wasteful number, since it uses less digits than its factorization.

1211023233129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113105876.

The product of its (nonzero) digits is 3888, while the sum is 30.

The spelling of 1211023233129 in words is "one trillion, two hundred eleven billion, twenty-three million, two hundred thirty-three thousand, one hundred twenty-nine".