1224012021100 has 72 divisors (see below), whose sum is σ = 2914921433088. Its totient is φ = 442429972800.

The previous prime is 1224012021097. The next prime is 1224012021109. The reversal of 1224012021100 is 11202104221.

It is not an unprimeable number, because it can be changed into a prime (1224012021109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3147852 + ... + 3515251.

It is an arithmetic number, because the mean of its divisors is an integer number (40485019904).

Almost surely, 2^{1224012021100} is an apocalyptic number.

1224012021100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1224012021100 is an abundant number, since it is smaller than the sum of its proper divisors (1690909411988).

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

1224012021100 is a wasteful number, since it uses less digits than its factorization.

1224012021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6663295 (or 6663288 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1224012021100 its reverse (11202104221), we get a palindrome (1235214125321).

The spelling of 1224012021100 in words is "one trillion, two hundred twenty-four billion, twelve million, twenty-one thousand, one hundred".