12222021010000 has 100 divisors (see below), whose sum is σ = 30149052130692. Its totient is φ = 4796566528000.

The previous prime is 12222021009983. The next prime is 12222021010009. The reversal of 12222021010000 is 1012022221.

It is a happy number.

It can be written as a sum of positive squares in 10 ways, for example, as 3712758629904 + 8509262380096 = 1926852^2 + 2917064^2 .

It is a tau number, because it is divible by the number of its divisors (100).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222021010009) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11000209 + ... + 12060208.

Almost surely, 2^{12222021010000} is an apocalyptic number.

12222021010000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222021010000 is an abundant number, since it is smaller than the sum of its proper divisors (17927031120692).

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

12222021010000 is an equidigital number, since it uses as much as digits as its factorization.

12222021010000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23060498 (or 23060477 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12222021010000 its reverse (1012022221), we get a palindrome (12223033032221).

The spelling of 12222021010000 in words is "twelve trillion, two hundred twenty-two billion, twenty-one million, ten thousand".