1223013232100 has 72 divisors (see below), whose sum is σ = 2895478615008. Its totient is φ = 444690188800.

The previous prime is 1223013232061. The next prime is 1223013232153. The reversal of 1223013232100 is 12323103221.

It is a super-2 number, since 2×1223013232100² (a number of 25 digits) contains 22 as substring.

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

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 13139324 + ... + 13232076.

It is an arithmetic number, because the mean of its divisors is an integer number (40214980764).

Almost surely, 2^{1223013232100} is an apocalyptic number.

1223013232100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223013232100 is an abundant number, since it is smaller than the sum of its proper divisors (1672465382908).

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

1223013232100 is a wasteful number, since it uses less digits than its factorization.

1223013232100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104765 (or 104758 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1223013232100 its reverse (12323103221), we get a palindrome (1235336335321).

The spelling of 1223013232100 in words is "one trillion, two hundred twenty-three billion, thirteen million, two hundred thirty-two thousand, one hundred".