1031120121029 has 2 divisors, whose sum is σ = 1031120121030. Its totient is φ = 1031120121028.

The previous prime is 1031120120977. The next prime is 1031120121043. The reversal of 1031120121029 is 9201210211301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 960841050625 + 70279070404 = 980225^2 + 265102^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1031120121029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1031120120995 and 1031120121013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1031120321029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515560060514 + 515560060515.

It is an arithmetic number, because the mean of its divisors is an integer number (515560060515).

Almost surely, 2^{1031120121029} is an apocalyptic number.

It is an amenable number.

1031120121029 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031120121029 is an equidigital number, since it uses as much as digits as its factorization.

1031120121029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 1031120121029 in words is "one trillion, thirty-one billion, one hundred twenty million, one hundred twenty-one thousand, twenty-nine".