1027156121 has 2 divisors, whose sum is σ = 1027156122. Its totient is φ = 1027156120.

The previous prime is 1027156111. The next prime is 1027156129. The reversal of 1027156121 is 1216517201.

1027156121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 583464025 + 443692096 = 24155^2 + 21064^2 .

It is a cyclic number.

It is not a de Polignac number, because 1027156121 - 2¹⁰ = 1027155097 is a prime.

It is not a weakly prime, because it can be changed into another prime (1027156129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 513578060 + 513578061.

It is an arithmetic number, because the mean of its divisors is an integer number (513578061).

Almost surely, 2^1027156121 is an apocalyptic number.

It is an amenable number.

1027156121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1027156121 is an equidigital number, since it uses as much as digits as its factorization.

1027156121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 1027156121 is about 32049.2764504910. The cubic root of 1027156121 is about 1008.9713151538.

The spelling of 1027156121 in words is "one billion, twenty-seven million, one hundred fifty-six thousand, one hundred twenty-one".