1222122221300 has 36 divisors (see below), whose sum is σ = 2652339989376. Its totient is φ = 488787180000.

The previous prime is 1222122221261. The next prime is 1222122221303. The reversal of 1222122221300 is 31222212221.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222122221303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28925 + ... + 1563675.

It is an arithmetic number, because the mean of its divisors is an integer number (73676110816).

Almost surely, 2^{1222122221300} is an apocalyptic number.

1222122221300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222122221300 is an abundant number, since it is smaller than the sum of its proper divisors (1430217768076).

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

1222122221300 is a wasteful number, since it uses less digits than its factorization.

1222122221300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542728 (or 1542721 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1222122221300 its reverse (31222212221), we get a palindrome (1253344433521).

The spelling of 1222122221300 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-two million, two hundred twenty-one thousand, three hundred".