1221202012222 has 8 divisors (see below), whose sum is σ = 1834861122000. Its totient is φ = 609581638224.

The previous prime is 1221202012159. The next prime is 1221202012241. The reversal of 1221202012222 is 2222102021221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1221202012222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509682447 + ... + 509684842.

It is an arithmetic number, because the mean of its divisors is an integer number (229357640250).

Almost surely, 2^{1221202012222} is an apocalyptic number.

1221202012222 is a deficient number, since it is larger than the sum of its proper divisors (613659109778).

1221202012222 is a wasteful number, since it uses less digits than its factorization.

1221202012222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019367890.

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

Adding to 1221202012222 its reverse (2222102021221), we get a palindrome (3443304033443).

The spelling of 1221202012222 in words is "one trillion, two hundred twenty-one billion, two hundred two million, twelve thousand, two hundred twenty-two".