19122081 has 16 divisors (see below), whose sum is σ = 28567488. Its totient is φ = 11275200.

The previous prime is 19122079. The next prime is 19122083. The reversal of 19122081 is 18022191.

It is an interprime number because it is at equal distance from previous prime (19122079) and next prime (19122083).

It is not a de Polignac number, because 19122081 - 2¹ = 19122079 is a prime.

It is a super-2 number, since 2×19122081² = 731307963541122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19122083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6610 + ... + 9051.

It is an arithmetic number, because the mean of its divisors is an integer number (1785468).

Almost surely, 2^19122081 is an apocalyptic number.

19122081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

19122081 is a deficient number, since it is larger than the sum of its proper divisors (9445407).

19122081 is a wasteful number, since it uses less digits than its factorization.

19122081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15712.

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 19122081 is about 4372.8801721520. The cubic root of 19122081 is about 267.4104559521.

It can be divided in two parts, 1912 and 2081, that added together give a palindrome (3993).

The spelling of 19122081 in words is "nineteen million, one hundred twenty-two thousand, eighty-one".