21522014194 has 16 divisors (see below), whose sum is σ = 33071401440. Its totient is φ = 10498783680.

The previous prime is 21522014179. The next prime is 21522014197. The reversal of 21522014194 is 49141022512.

It is not an unprimeable number, because it can be changed into a prime (21522014197) 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, 66264 + ... + 217795.

It is an arithmetic number, because the mean of its divisors is an integer number (2066962590).

Almost surely, 2^21522014194 is an apocalyptic number.

21522014194 is a deficient number, since it is larger than the sum of its proper divisors (11549387246).

21522014194 is a wasteful number, since it uses less digits than its factorization.

21522014194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284985.

The product of its (nonzero) digits is 5760, while the sum is 31.

The spelling of 21522014194 in words is "twenty-one billion, five hundred twenty-two million, fourteen thousand, one hundred ninety-four".