21380441722 has 16 divisors (see below), whose sum is σ = 32539776192. Its totient is φ = 10534011040.

The previous prime is 21380441597. The next prime is 21380441723. The reversal of 21380441722 is 22714408312.

It is not an unprimeable number, because it can be changed into a prime (21380441723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232293 + ... + 310999.

It is an arithmetic number, because the mean of its divisors is an integer number (2033736012).

Almost surely, 2^21380441722 is an apocalyptic number.

21380441722 is a deficient number, since it is larger than the sum of its proper divisors (11159334470).

21380441722 is a wasteful number, since it uses less digits than its factorization.

21380441722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80693.

The product of its (nonzero) digits is 21504, while the sum is 34.

The spelling of 21380441722 in words is "twenty-one billion, three hundred eighty million, four hundred forty-one thousand, seven hundred twenty-two".