20211123221019 has 8 divisors (see below), whose sum is σ = 29942404771920. Its totient is φ = 13474082147328.

The previous prime is 20211123221011. The next prime is 20211123221027. The reversal of 20211123221019 is 91012232111202.

20211123221019 is a `hidden beast` number, since 2 + 0 + 211 + 1 + 232 + 210 + 1 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (20211123221011) and next prime (20211123221027).

It is not a de Polignac number, because 20211123221019 - 2³ = 20211123221011 is a prime.

It is a super-2 number, since 2×20211123221019² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 748560119297 = 20211123221019 / (2 + 0 + 2 + 1 + 1 + 1 + 2 + 3 + 2 + 2 + 1 + 0 + 1 + 9).

It is a junction number, because it is equal to n+sod(n) for n = 20211123220983 and 20211123221001.

It is not an unprimeable number, because it can be changed into a prime (20211123221011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374280059622 + ... + 374280059675.

It is an arithmetic number, because the mean of its divisors is an integer number (3742800596490).

Almost surely, 2^{20211123221019} is an apocalyptic number.

20211123221019 is a deficient number, since it is larger than the sum of its proper divisors (9731281550901).

20211123221019 is an equidigital number, since it uses as much as digits as its factorization.

20211123221019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748560119306 (or 748560119300 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The spelling of 20211123221019 in words is "twenty trillion, two hundred eleven billion, one hundred twenty-three million, two hundred twenty-one thousand, nineteen".