21122144043 has 32 divisors (see below), whose sum is σ = 37813074432. Its totient is φ = 10128499200.

The previous prime is 21122144041. The next prime is 21122144101. The reversal of 21122144043 is 34044122112.

It is not a de Polignac number, because 21122144043 - 2¹ = 21122144041 is a prime.

It is a super-2 number, since 2×21122144043² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21122144041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3513838 + ... + 3519843.

It is an arithmetic number, because the mean of its divisors is an integer number (1181658576).

Almost surely, 2^21122144043 is an apocalyptic number.

21122144043 is a deficient number, since it is larger than the sum of its proper divisors (16690930389).

21122144043 is a wasteful number, since it uses less digits than its factorization.

21122144043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7033715.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 21122144043 its reverse (34044122112), we get a palindrome (55166266155).

The spelling of 21122144043 in words is "twenty-one billion, one hundred twenty-two million, one hundred forty-four thousand, forty-three".