1022121999043 has 2 divisors, whose sum is σ = 1022121999044. Its totient is φ = 1022121999042.

The previous prime is 1022121999023. The next prime is 1022121999049. The reversal of 1022121999043 is 3409991212201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1022121999043 is a prime.

It is not a weakly prime, because it can be changed into another prime (1022121999049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511060999521 + 511060999522.

It is an arithmetic number, because the mean of its divisors is an integer number (511060999522).

Almost surely, 2^{1022121999043} is an apocalyptic number.

1022121999043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022121999043 is an equidigital number, since it uses as much as digits as its factorization.

1022121999043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 43.

The spelling of 1022121999043 in words is "one trillion, twenty-two billion, one hundred twenty-one million, nine hundred ninety-nine thousand, forty-three".