1221222010222 has 16 divisors (see below), whose sum is σ = 1875473600832. Its totient is φ = 596128940800.

The previous prime is 1221222010159. The next prime is 1221222010231. The reversal of 1221222010222 is 2220102221221.

It is a self number, because there is not a number n which added to its sum of digits gives 1221222010222.

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, 16161463 + ... + 16236850.

It is an arithmetic number, because the mean of its divisors is an integer number (117217100052).

Almost surely, 2^{1221222010222} is an apocalyptic number.

1221222010222 is a deficient number, since it is larger than the sum of its proper divisors (654251590610).

1221222010222 is a wasteful number, since it uses less digits than its factorization.

1221222010222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32398763.

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

Adding to 1221222010222 its reverse (2220102221221), we get a palindrome (3441324231443).

The spelling of 1221222010222 in words is "one trillion, two hundred twenty-one billion, two hundred twenty-two million, ten thousand, two hundred twenty-two".