20412223019 has 4 divisors (see below), whose sum is σ = 20455932744. Its totient is φ = 20368513296.

The previous prime is 20412222997. The next prime is 20412223021. The reversal of 20412223019 is 91032221402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20412223019 - 2¹² = 20412218923 is a prime.

It is a super-2 number, since 2×20412223019² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20412223919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21854162 + ... + 21855095.

It is an arithmetic number, because the mean of its divisors is an integer number (5113983186).

Almost surely, 2^20412223019 is an apocalyptic number.

20412223019 is a deficient number, since it is larger than the sum of its proper divisors (43709725).

20412223019 is an equidigital number, since it uses as much as digits as its factorization.

20412223019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43709724.

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 20412223019 in words is "twenty billion, four hundred twelve million, two hundred twenty-three thousand, nineteen".