1021021111219 has 2 divisors, whose sum is σ = 1021021111220. Its totient is φ = 1021021111218.

The previous prime is 1021021111207. The next prime is 1021021111223. The reversal of 1021021111219 is 9121111201201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1021021111219 - 2³⁹ = 471265297331 is a prime.

It is a super-2 number, since 2×1021021111219² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1021021111219.

It is not a weakly prime, because it can be changed into another prime (1021021111259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510510555609 + 510510555610.

It is an arithmetic number, because the mean of its divisors is an integer number (510510555610).

Almost surely, 2^{1021021111219} is an apocalyptic number.

1021021111219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021021111219 is an equidigital number, since it uses as much as digits as its factorization.

1021021111219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 1021021111219 in words is "one trillion, twenty-one billion, twenty-one million, one hundred eleven thousand, two hundred nineteen".