1222211324450 has 48 divisors (see below), whose sum is σ = 2281141586880. Its totient is φ = 487201704000.

The previous prime is 1222211324449. The next prime is 1222211324461. The reversal of 1222211324450 is 544231122221.

It is a super-2 number, since 2×1222211324450² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121113905 + ... + 121123995.

It is an arithmetic number, because the mean of its divisors is an integer number (47523783060).

Almost surely, 2^{1222211324450} is an apocalyptic number.

1222211324450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222211324450 is a deficient number, since it is larger than the sum of its proper divisors (1058930262430).

1222211324450 is a wasteful number, since it uses less digits than its factorization.

1222211324450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18203 (or 18198 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 1222211324450 its reverse (544231122221), we get a palindrome (1766442446671).

The spelling of 1222211324450 in words is "one trillion, two hundred twenty-two billion, two hundred eleven million, three hundred twenty-four thousand, four hundred fifty".