22021342132 has 6 divisors (see below), whose sum is σ = 38537348738. Its totient is φ = 11010671064.

The previous prime is 22021342127. The next prime is 22021342141. The reversal of 22021342132 is 23124312022.

It can be written as a sum of positive squares in only one way, i.e., 14671023376 + 7350318756 = 121124^2 + 85734^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2752667763 + ... + 2752667770.

Almost surely, 2^22021342132 is an apocalyptic number.

It is an amenable number.

22021342132 is a deficient number, since it is larger than the sum of its proper divisors (16516006606).

22021342132 is a wasteful number, since it uses less digits than its factorization.

22021342132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5505335537 (or 5505335535 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 22021342132 its reverse (23124312022), we get a palindrome (45145654154).

The spelling of 22021342132 in words is "twenty-two billion, twenty-one million, three hundred forty-two thousand, one hundred thirty-two".