10221020219 has 4 divisors (see below), whose sum is σ = 10295626344. Its totient is φ = 10146414096.

The previous prime is 10221020207. The next prime is 10221020221. The reversal of 10221020219 is 91202012201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91202012201 = 281 ⋅324562321.

It is a cyclic number.

It is not a de Polignac number, because 10221020219 - 2⁴ = 10221020203 is a prime.

It is a super-2 number, since 2×10221020219² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10221020219.

It is not an unprimeable number, because it can be changed into a prime (10221020239) 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, 37302857 + ... + 37303130.

It is an arithmetic number, because the mean of its divisors is an integer number (2573906586).

Almost surely, 2^10221020219 is an apocalyptic number.

10221020219 is a deficient number, since it is larger than the sum of its proper divisors (74606125).

10221020219 is an equidigital number, since it uses as much as digits as its factorization.

10221020219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74606124.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 10221020219 in words is "ten billion, two hundred twenty-one million, twenty thousand, two hundred nineteen".