122221719 has 12 divisors (see below), whose sum is σ = 176652736. Its totient is φ = 81430272.

The previous prime is 122221711. The next prime is 122221739. The reversal of 122221719 is 917122221.

It is not a de Polignac number, because 122221719 - 2³ = 122221711 is a prime.

It is a super-2 number, since 2×122221719² = 29876297190629922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122221692 and 122221701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221711) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16119 + ... + 22455.

Almost surely, 2^122221719 is an apocalyptic number.

122221719 is a deficient number, since it is larger than the sum of its proper divisors (54431017).

122221719 is a wasteful number, since it uses less digits than its factorization.

122221719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8486 (or 8483 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 122221719 is about 11055.3932087466. The cubic root of 122221719 is about 496.2678365594.

It can be divided in two parts, 122 and 221719, that added together give a square (221841 = 471²).

The spelling of 122221719 in words is "one hundred twenty-two million, two hundred twenty-one thousand, seven hundred nineteen".