20112221019 has 8 divisors (see below), whose sum is σ = 29254139712. Its totient is φ = 12189224840.

The previous prime is 20112221011. The next prime is 20112221099. The reversal of 20112221019 is 91012221102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20112221019 - 2³ = 20112221011 is a prime.

It is a super-2 number, since 2×20112221019² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20112220986 and 20112221004.

It is not an unprimeable number, because it can be changed into a prime (20112221011) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 304730589 + ... + 304730654.

It is an arithmetic number, because the mean of its divisors is an integer number (3656767464).

Almost surely, 2^20112221019 is an apocalyptic number.

20112221019 is a deficient number, since it is larger than the sum of its proper divisors (9141918693).

20112221019 is a wasteful number, since it uses less digits than its factorization.

20112221019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609461257.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 20112221019 in words is "twenty billion, one hundred twelve million, two hundred twenty-one thousand, nineteen".