21401648922 has 16 divisors (see below), whose sum is σ = 42816674880. Its totient is φ = 7131653472.

The previous prime is 21401648921. The next prime is 21401649011. The reversal of 21401648922 is 22984610412.

It is not an unprimeable number, because it can be changed into a prime (21401648921) 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, 536518 + ... + 575025.

It is an arithmetic number, because the mean of its divisors is an integer number (2676042180).

Almost surely, 2^21401648922 is an apocalyptic number.

21401648922 is an abundant number, since it is smaller than the sum of its proper divisors (21415025958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21401648922 is a wasteful number, since it uses less digits than its factorization.

21401648922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114757.

The product of its (nonzero) digits is 55296, while the sum is 39.

The spelling of 21401648922 in words is "twenty-one billion, four hundred one million, six hundred forty-eight thousand, nine hundred twenty-two".