1222544541 has 4 divisors (see below), whose sum is σ = 1630059392. Its totient is φ = 815029692.

The previous prime is 1222544539. The next prime is 1222544573. The reversal of 1222544541 is 1454452221.

1222544541 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1222544541 - 2¹ = 1222544539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222544499 and 1222544508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222544581) 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, 203757421 + ... + 203757426.

It is an arithmetic number, because the mean of its divisors is an integer number (407514848).

Almost surely, 2^1222544541 is an apocalyptic number.

It is an amenable number.

1222544541 is a deficient number, since it is larger than the sum of its proper divisors (407514851).

1222544541 is an equidigital number, since it uses as much as digits as its factorization.

1222544541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407514850.

The product of its digits is 12800, while the sum is 30.

The square root of 1222544541 is about 34964.9044185738. The cubic root of 1222544541 is about 1069.2720879693.

Adding to 1222544541 its reverse (1454452221), we get a palindrome (2676996762).

The spelling of 1222544541 in words is "one billion, two hundred twenty-two million, five hundred forty-four thousand, five hundred forty-one".