212203221222 has 16 divisors (see below), whose sum is σ = 424502754480. Its totient is φ = 70718355072.

The previous prime is 212203221211. The next prime is 212203221233. The reversal of 212203221222 is 222122302212.

It is an interprime number because it is at equal distance from previous prime (212203221211) and next prime (212203221233).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3984343 + ... + 4037250.

It is an arithmetic number, because the mean of its divisors is an integer number (26531422155).

Almost surely, 2^212203221222 is an apocalyptic number.

212203221222 is an abundant number, since it is smaller than the sum of its proper divisors (212299533258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212203221222 is a wasteful number, since it uses less digits than its factorization.

212203221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8026007.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 212203221222 its reverse (222122302212), we get a palindrome (434325523434).

The spelling of 212203221222 in words is "two hundred twelve billion, two hundred three million, two hundred twenty-one thousand, two hundred twenty-two".