21422211745 has 16 divisors (see below), whose sum is σ = 28049664960. Its totient is φ = 15576433600.

The previous prime is 21422211737. The next prime is 21422211761. The reversal of 21422211745 is 54711222412.

It is not a de Polignac number, because 21422211745 - 2³ = 21422211737 is a prime.

It is a super-2 number, since 2×21422211745² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231711 + ... + 310699.

It is an arithmetic number, because the mean of its divisors is an integer number (1753104060).

Almost surely, 2^21422211745 is an apocalyptic number.

It is an amenable number.

21422211745 is a deficient number, since it is larger than the sum of its proper divisors (6627453215).

21422211745 is a wasteful number, since it uses less digits than its factorization.

21422211745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83936.

The product of its digits is 8960, while the sum is 31.

The spelling of 21422211745 in words is "twenty-one billion, four hundred twenty-two million, two hundred eleven thousand, seven hundred forty-five".