222050981 has 4 divisors (see below), whose sum is σ = 223277964. Its totient is φ = 220824000.

The previous prime is 222050963. The next prime is 222050987. The reversal of 222050981 is 189050222.

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 107453956 + 114597025 = 10366^2 + 10705^2 .

It is a cyclic number.

It is not a de Polignac number, because 222050981 - 2¹⁴ = 222034597 is a prime.

It is a super-2 number, since 2×222050981² = 98613276326124722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222050987) 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, 613220 + ... + 613581.

It is an arithmetic number, because the mean of its divisors is an integer number (55819491).

Almost surely, 2^222050981 is an apocalyptic number.

It is an amenable number.

222050981 is a deficient number, since it is larger than the sum of its proper divisors (1226983).

222050981 is a wasteful number, since it uses less digits than its factorization.

222050981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226982.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 222050981 is about 14901.3751378858. The cubic root of 222050981 is about 605.5512413213.

The spelling of 222050981 in words is "two hundred twenty-two million, fifty thousand, nine hundred eighty-one".