1000222807021 has 4 divisors (see below), whose sum is σ = 1000226909500. Its totient is φ = 1000218704544.

The previous prime is 1000222806997. The next prime is 1000222807037. The reversal of 1000222807021 is 1207082220001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 408846426921 + 591376380100 = 639411^2 + 769010^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000222807021 - 2²¹ = 1000220709869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000222807091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1660746 + ... + 2181403.

It is an arithmetic number, because the mean of its divisors is an integer number (250056727375).

Almost surely, 2^{1000222807021} is an apocalyptic number.

It is an amenable number.

1000222807021 is a deficient number, since it is larger than the sum of its proper divisors (4102479).

1000222807021 is an equidigital number, since it uses as much as digits as its factorization.

1000222807021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4102478.

The product of its (nonzero) digits is 896, while the sum is 25.

The spelling of 1000222807021 in words is "one trillion, two hundred twenty-two million, eight hundred seven thousand, twenty-one".