1000220194031 has 2 divisors, whose sum is σ = 1000220194032. Its totient is φ = 1000220194030.

The previous prime is 1000220194007. The next prime is 1000220194093. The reversal of 1000220194031 is 1304910220001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1000220194031 - 2³⁰ = 999146452207 is a prime.

It is a super-2 number, since 2×1000220194031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1000220193988 and 1000220194006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000220194931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500110097015 + 500110097016.

It is an arithmetic number, because the mean of its divisors is an integer number (500110097016).

Almost surely, 2^{1000220194031} is an apocalyptic number.

1000220194031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000220194031 is an equidigital number, since it uses as much as digits as its factorization.

1000220194031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 1000220194031 in words is "one trillion, two hundred twenty million, one hundred ninety-four thousand, thirty-one".