1020021111199 has 2 divisors, whose sum is σ = 1020021111200. Its totient is φ = 1020021111198.

The previous prime is 1020021111119. The next prime is 1020021111269. The reversal of 1020021111199 is 9911111200201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1020021111199 - 2⁷ = 1020021111071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020021111119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510010555599 + 510010555600.

It is an arithmetic number, because the mean of its divisors is an integer number (510010555600).

Almost surely, 2^{1020021111199} is an apocalyptic number.

1020021111199 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020021111199 is an equidigital number, since it uses as much as digits as its factorization.

1020021111199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 28.

The spelling of 1020021111199 in words is "one trillion, twenty billion, twenty-one million, one hundred eleven thousand, one hundred ninety-nine".