2221212001222 has 16 divisors (see below), whose sum is σ = 3352347748512. Its totient is φ = 1103765048640.

The previous prime is 2221212001189. The next prime is 2221212001223. The reversal of 2221212001222 is 2221002121222.

It is a self number, because there is not a number n which added to its sum of digits gives 2221212001222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221212001223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1372978 + ... + 2515450.

It is an arithmetic number, because the mean of its divisors is an integer number (209521734282).

Almost surely, 2^{2221212001222} is an apocalyptic number.

2221212001222 is a deficient number, since it is larger than the sum of its proper divisors (1131135747290).

2221212001222 is a wasteful number, since it uses less digits than its factorization.

2221212001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148463.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2221212001222 its reverse (2221002121222), we get a palindrome (4442214122444).

The spelling of 2221212001222 in words is "two trillion, two hundred twenty-one billion, two hundred twelve million, one thousand, two hundred twenty-two".