21226374705 has 16 divisors (see below), whose sum is σ = 33974950464. Its totient is φ = 11316482880.

The previous prime is 21226374661. The next prime is 21226374713. The reversal of 21226374705 is 50747362212.

It is not a de Polignac number, because 21226374705 - 2¹² = 21226370609 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224151 + ... + 304460.

It is an arithmetic number, because the mean of its divisors is an integer number (2123434404).

Almost surely, 2^21226374705 is an apocalyptic number.

It is an amenable number.

21226374705 is a deficient number, since it is larger than the sum of its proper divisors (12748575759).

21226374705 is a wasteful number, since it uses less digits than its factorization.

21226374705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531296.

The product of its (nonzero) digits is 141120, while the sum is 39.

The spelling of 21226374705 in words is "twenty-one billion, two hundred twenty-six million, three hundred seventy-four thousand, seven hundred five".