22129019 has 12 divisors (see below), whose sum is σ = 25648008. Its totient is φ = 18931200.

The previous prime is 22129007. The next prime is 22129021. The reversal of 22129019 is 91092122.

It is a happy number.

It is not a de Polignac number, because 22129019 - 2¹² = 22124923 is a prime.

It is a super-2 number, since 2×22129019² = 979386963804722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22129039) 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, 302 + ... + 6659.

It is an arithmetic number, because the mean of its divisors is an integer number (2137334).

Almost surely, 2^22129019 is an apocalyptic number.

22129019 is a deficient number, since it is larger than the sum of its proper divisors (3518989).

22129019 is a wasteful number, since it uses less digits than its factorization.

22129019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7006 (or 6989 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 22129019 is about 4704.1491260376. The cubic root of 22129019 is about 280.7506177652.

The spelling of 22129019 in words is "twenty-two million, one hundred twenty-nine thousand, nineteen".