21522606226 has 32 divisors (see below), whose sum is σ = 35604406656. Its totient is φ = 9676128000.

The previous prime is 21522606223. The next prime is 21522606233. The reversal of 21522606226 is 62260622512.

It is a junction number, because it is equal to n+sod(n) for n = 21522606191 and 21522606200.

It is not an unprimeable number, because it can be changed into a prime (21522606223) 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, 1990956 + ... + 2001736.

It is an arithmetic number, because the mean of its divisors is an integer number (1112637708).

Almost surely, 2^21522606226 is an apocalyptic number.

21522606226 is a deficient number, since it is larger than the sum of its proper divisors (14081800430).

21522606226 is a wasteful number, since it uses less digits than its factorization.

21522606226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11778.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 21522606226 in words is "twenty-one billion, five hundred twenty-two million, six hundred six thousand, two hundred twenty-six".