1123421033129 has 2 divisors, whose sum is σ = 1123421033130. Its totient is φ = 1123421033128.

The previous prime is 1123421033113. The next prime is 1123421033173. The reversal of 1123421033129 is 9213301243211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1116988993129 + 6432040000 = 1056877^2 + 80200^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123421033129 - 2⁴ = 1123421033113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1123421033095 and 1123421033104.

It is not a weakly prime, because it can be changed into another prime (1123421033629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561710516564 + 561710516565.

It is an arithmetic number, because the mean of its divisors is an integer number (561710516565).

Almost surely, 2^{1123421033129} is an apocalyptic number.

It is an amenable number.

1123421033129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123421033129 is an equidigital number, since it uses as much as digits as its factorization.

1123421033129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 1123421033129 in words is "one trillion, one hundred twenty-three billion, four hundred twenty-one million, thirty-three thousand, one hundred twenty-nine".