21722246801723 has 8 divisors (see below), whose sum is σ = 23963754446016. Its totient is φ = 19562248526400.

The previous prime is 21722246801587. The next prime is 21722246801743. The reversal of 21722246801723 is 32710864222712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21722246801723 - 2¹² = 21722246797627 is a prime.

It is a super-2 number, since 2×21722246801723² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21722246801743) 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, 20377341683 + ... + 20377342748.

It is an arithmetic number, because the mean of its divisors is an integer number (2995469305752).

Almost surely, 2^{21722246801723} is an apocalyptic number.

21722246801723 is a deficient number, since it is larger than the sum of its proper divisors (2241507644293).

21722246801723 is a wasteful number, since it uses less digits than its factorization.

21722246801723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40754684485.

The product of its (nonzero) digits is 903168, while the sum is 47.

The spelling of 21722246801723 in words is "twenty-one trillion, seven hundred twenty-two billion, two hundred forty-six million, eight hundred one thousand, seven hundred twenty-three".