1222250511 has 8 divisors (see below), whose sum is σ = 1630141744. Its totient is φ = 814596480.

The previous prime is 1222250509. The next prime is 1222250527. The reversal of 1222250511 is 1150522221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1222250511 - 2¹ = 1222250509 is a prime.

It is a super-2 number, since 2×1222250511² = 2987792623279522242, 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 (1222250531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46906 + ... + 68151.

It is an arithmetic number, because the mean of its divisors is an integer number (203767718).

Almost surely, 2^1222250511 is an apocalyptic number.

1222250511 is a deficient number, since it is larger than the sum of its proper divisors (407891233).

1222250511 is a wasteful number, since it uses less digits than its factorization.

1222250511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118601.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1222250511 is about 34960.6995210336. The cubic root of 1222250511 is about 1069.1863587737.

Adding to 1222250511 its reverse (1150522221), we get a palindrome (2372772732).

The spelling of 1222250511 in words is "one billion, two hundred twenty-two million, two hundred fifty thousand, five hundred eleven".