1021230121019 has 2 divisors, whose sum is σ = 1021230121020. Its totient is φ = 1021230121018.

The previous prime is 1021230120983. The next prime is 1021230121031. The reversal of 1021230121019 is 9101210321201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1021230121019 - 2²⁴ = 1021213343803 is a prime.

It is a super-2 number, since 2×1021230121019² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1021230120985 and 1021230121003.

It is not a weakly prime, because it can be changed into another prime (1021230121519) 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 as a sum of consecutive naturals, namely, 510615060509 + 510615060510.

It is an arithmetic number, because the mean of its divisors is an integer number (510615060510).

Almost surely, 2^{1021230121019} is an apocalyptic number.

1021230121019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021230121019 is an equidigital number, since it uses as much as digits as its factorization.

1021230121019 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 1021230121019 in words is "one trillion, twenty-one billion, two hundred thirty million, one hundred twenty-one thousand, nineteen".