12222021044 has 6 divisors (see below), whose sum is σ = 21388536834. Its totient is φ = 6111010520.

The previous prime is 12222021043. The next prime is 12222021067. The reversal of 12222021044 is 44012022221.

It can be written as a sum of positive squares in only one way, i.e., 12179771044 + 42250000 = 110362^2 + 6500^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222021043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1527752627 + ... + 1527752634.

It is an arithmetic number, because the mean of its divisors is an integer number (3564756139).

Almost surely, 2^12222021044 is an apocalyptic number.

It is an amenable number.

12222021044 is a deficient number, since it is larger than the sum of its proper divisors (9166515790).

12222021044 is a wasteful number, since it uses less digits than its factorization.

12222021044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3055505265 (or 3055505263 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 12222021044 its reverse (44012022221), we get a palindrome (56234043265).

The spelling of 12222021044 in words is "twelve billion, two hundred twenty-two million, twenty-one thousand, forty-four".