2022221394 has 24 divisors (see below), whose sum is σ = 4424864652. Its totient is φ = 667399200.

The previous prime is 2022221353. The next prime is 2022221437. The reversal of 2022221394 is 4931222202.

It can be written as a sum of positive squares in 2 ways, for example, as 1504431369 + 517790025 = 38787^2 + 22755^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 554349 + ... + 557984.

Almost surely, 2^2022221394 is an apocalyptic number.

2022221394 is an abundant number, since it is smaller than the sum of its proper divisors (2402643258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2022221394 is a wasteful number, since it uses less digits than its factorization.

2022221394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112442 (or 1112439 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 2022221394 is about 44969.1160019852. The cubic root of 2022221394 is about 1264.5700745473.

Adding to 2022221394 its reverse (4931222202), we get a palindrome (6953443596).

It can be divided in two parts, 20222 and 21394, that added together give a triangular number (41616 = T₂₈₈).

The spelling of 2022221394 in words is "two billion, twenty-two million, two hundred twenty-one thousand, three hundred ninety-four".