2212001211222 has 64 divisors (see below), whose sum is σ = 5371952728320. Its totient is φ = 669112704000.

The previous prime is 2212001211139. The next prime is 2212001211223. The reversal of 2212001211222 is 2221121002122.

It is a happy number.

2212001211222 is a `hidden beast` number, since 221 + 200 + 1 + 21 + 1 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2212001211195 and 2212001211204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212001211223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2972779 + ... + 3641622.

It is an arithmetic number, because the mean of its divisors is an integer number (83936761380).

Almost surely, 2^{2212001211222} is an apocalyptic number.

2212001211222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2212001211222 is an abundant number, since it is smaller than the sum of its proper divisors (3159951517098).

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

2212001211222 is a wasteful number, since it uses less digits than its factorization.

2212001211222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6614986 (or 6614980 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2212001211222 its reverse (2221121002122), we get a palindrome (4433122213344).

The spelling of 2212001211222 in words is "two trillion, two hundred twelve billion, one million, two hundred eleven thousand, two hundred twenty-two".