11221234501 has 2 divisors, whose sum is σ = 11221234502. Its totient is φ = 11221234500.

The previous prime is 11221234483. The next prime is 11221234511. The reversal of 11221234501 is 10543212211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9297973476 + 1923261025 = 96426^2 + 43855^2 .

It is a cyclic number.

It is not a de Polignac number, because 11221234501 - 2⁵ = 11221234469 is a prime.

It is a super-2 number, since 2×11221234501² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11221234511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610617250 + 5610617251.

It is an arithmetic number, because the mean of its divisors is an integer number (5610617251).

Almost surely, 2^11221234501 is an apocalyptic number.

It is an amenable number.

11221234501 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221234501 is an equidigital number, since it uses as much as digits as its factorization.

11221234501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 11221234501 its reverse (10543212211), we get a palindrome (21764446712).

The spelling of 11221234501 in words is "eleven billion, two hundred twenty-one million, two hundred thirty-four thousand, five hundred one".