1023121019 has 2 divisors, whose sum is σ = 1023121020. Its totient is φ = 1023121018.

The previous prime is 1023120977. The next prime is 1023121027. The reversal of 1023121019 is 9101213201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1023121019 - 2²⁴ = 1006343803 is a prime.

It is a super-2 number, since 2×1023121019² = 2093553239039196722, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1023121039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511560509 + 511560510.

It is an arithmetic number, because the mean of its divisors is an integer number (511560510).

Almost surely, 2^1023121019 is an apocalyptic number.

1023121019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023121019 is an equidigital number, since it uses as much as digits as its factorization.

1023121019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 1023121019 is about 31986.2629733453. The cubic root of 1023121019 is about 1007.6483597895.

The spelling of 1023121019 in words is "one billion, twenty-three million, one hundred twenty-one thousand, nineteen".