1221012110024 has 64 divisors (see below), whose sum is σ = 2653985917440. Its totient is φ = 515793761280.

The previous prime is 1221012110023. The next prime is 1221012110029. The reversal of 1221012110024 is 4200112101221.

It is a junction number, because it is equal to n+sod(n) for n = 1221012109984 and 1221012110011.

It is not an unprimeable number, because it can be changed into a prime (1221012110023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6376964 + ... + 6565644.

It is an arithmetic number, because the mean of its divisors is an integer number (41468529960).

Almost surely, 2^{1221012110024} is an apocalyptic number.

1221012110024 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1221012110024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1326992958720).

1221012110024 is an abundant number, since it is smaller than the sum of its proper divisors (1432973807416).

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

1221012110024 is a wasteful number, since it uses less digits than its factorization.

1221012110024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190350 (or 190346 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1221012110024 its reverse (4200112101221), we get a palindrome (5421124211245).

The spelling of 1221012110024 in words is "one trillion, two hundred twenty-one billion, twelve million, one hundred ten thousand, twenty-four".