1223303222100 has 36 divisors (see below), whose sum is σ = 3539423990144. Its totient is φ = 326214192480.

The previous prime is 1223303222081. The next prime is 1223303222101. The reversal of 1223303222100 is 12223033221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223303222101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2038838404 + ... + 2038839003.

Almost surely, 2^{1223303222100} is an apocalyptic number.

1223303222100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223303222100 is an abundant number, since it is smaller than the sum of its proper divisors (2316120768044).

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

1223303222100 is a wasteful number, since it uses less digits than its factorization.

1223303222100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4077677424 (or 4077677417 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 1223303222100 its reverse (12223033221), we get a palindrome (1235526255321).

The spelling of 1223303222100 in words is "one trillion, two hundred twenty-three billion, three hundred three million, two hundred twenty-two thousand, one hundred".