10012221019 has 4 divisors (see below), whose sum is σ = 10539180040. Its totient is φ = 9485262000.

The previous prime is 10012221017. The next prime is 10012221041. The reversal of 10012221019 is 91012221001.

It is a happy number.

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 10012221019 - 2¹ = 10012221017 is a prime.

It is a super-2 number, since 2×10012221019² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 526959001 = 10012221019 / (1 + 0 + 0 + 1 + 2 + 2 + 2 + 1 + 0 + 1 + 9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10012220987 and 10012221005.

It is not an unprimeable number, because it can be changed into a prime (10012221017) 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, 263479482 + ... + 263479519.

It is an arithmetic number, because the mean of its divisors is an integer number (2634795010).

Almost surely, 2^10012221019 is an apocalyptic number.

10012221019 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

10012221019 is a deficient number, since it is larger than the sum of its proper divisors (526959021).

10012221019 is an equidigital number, since it uses as much as digits as its factorization.

10012221019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526959020.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 10012221019 in words is "ten billion, twelve million, two hundred twenty-one thousand, nineteen".