1223221221300 has 72 divisors (see below), whose sum is σ = 3811431879136. Its totient is φ = 301100607360.

The previous prime is 1223221221283. The next prime is 1223221221319. The reversal of 1223221221300 is 31221223221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 156819334 + ... + 156827133.

Almost surely, 2^{1223221221300} is an apocalyptic number.

1223221221300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223221221300 is an abundant number, since it is smaller than the sum of its proper divisors (2588210657836).

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

1223221221300 is a wasteful number, since it uses less digits than its factorization.

1223221221300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313646497 (or 313646490 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1223221221300 its reverse (31221223221), we get a palindrome (1254442444521).

The spelling of 1223221221300 in words is "one trillion, two hundred twenty-three billion, two hundred twenty-one million, two hundred twenty-one thousand, three hundred".