21443433022 has 32 divisors (see below), whose sum is σ = 37263006720. Its totient is φ = 9152277120.

The previous prime is 21443433007. The next prime is 21443433023. The reversal of 21443433022 is 22033434412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21443433023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179758 + ... + 274225.

It is an arithmetic number, because the mean of its divisors is an integer number (1164468960).

Almost surely, 2^21443433022 is an apocalyptic number.

21443433022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21443433022 is a deficient number, since it is larger than the sum of its proper divisors (15819573698).

21443433022 is a wasteful number, since it uses less digits than its factorization.

21443433022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454128.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 21443433022 its reverse (22033434412), we get a palindrome (43476867434).

It can be divided in two parts, 214434 and 33022, that added together give a triangular number (247456 = T₇₀₃).

The spelling of 21443433022 in words is "twenty-one billion, four hundred forty-three million, four hundred thirty-three thousand, twenty-two".