11220212554 has 16 divisors (see below), whose sum is σ = 16943363208. Its totient is φ = 5572449792.

The previous prime is 11220212539. The next prime is 11220212579. The reversal of 11220212554 is 45521202211.

It can be written as a sum of positive squares in 4 ways, for example, as 7136363529 + 4083849025 = 84477^2 + 63905^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1458462 + ... + 1466134.

Almost surely, 2^11220212554 is an apocalyptic number.

11220212554 is a deficient number, since it is larger than the sum of its proper divisors (5723150654).

11220212554 is a wasteful number, since it uses less digits than its factorization.

11220212554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12489.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 11220212554 its reverse (45521202211), we get a palindrome (56741414765).

The spelling of 11220212554 in words is "eleven billion, two hundred twenty million, two hundred twelve thousand, five hundred fifty-four".