1022221133 has 4 divisors (see below), whose sum is σ = 1025911740. Its totient is φ = 1018530528.

The previous prime is 1022221127. The next prime is 1022221139. The reversal of 1022221133 is 3311222201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3311222201 = 7 ⋅473031743.

It is an interprime number because it is at equal distance from previous prime (1022221127) and next prime (1022221139).

It can be written as a sum of positive squares in 2 ways, for example, as 647295364 + 374925769 = 25442^2 + 19363^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022221133 - 2¹⁰ = 1022220109 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 (1022221139) 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, 1844888 + ... + 1845441.

It is an arithmetic number, because the mean of its divisors is an integer number (256477935).

Almost surely, 2^1022221133 is an apocalyptic number.

It is an amenable number.

1022221133 is a deficient number, since it is larger than the sum of its proper divisors (3690607).

1022221133 is an equidigital number, since it uses as much as digits as its factorization.

1022221133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3690606.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1022221133 is about 31972.1931215236. The cubic root of 1022221133 is about 1007.3528474586.

Adding to 1022221133 its reverse (3311222201), we get a palindrome (4333443334).

The spelling of 1022221133 in words is "one billion, twenty-two million, two hundred twenty-one thousand, one hundred thirty-three".