212221222019 has 16 divisors (see below), whose sum is σ = 235911916800. Its totient is φ = 189993282336.

The previous prime is 212221222009. The next prime is 212221222027. The reversal of 212221222019 is 910222122212.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212221222019 is a prime.

It is a super-2 number, since 2×212221222019² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212221222009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2889224 + ... + 2961765.

It is an arithmetic number, because the mean of its divisors is an integer number (14744494800).

Almost surely, 2^212221222019 is an apocalyptic number.

212221222019 is a deficient number, since it is larger than the sum of its proper divisors (23690694781).

212221222019 is a wasteful number, since it uses less digits than its factorization.

212221222019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5851114.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 212221222019 in words is "two hundred twelve billion, two hundred twenty-one million, two hundred twenty-two thousand, nineteen".