10111221220000 has 60 divisors (see below), whose sum is σ = 24875120933586. Its totient is φ = 4044488480000.

The previous prime is 10111221219949. The next prime is 10111221220013. The reversal of 10111221220000 is 2212211101.

It can be written as a sum of positive squares in 5 ways, for example, as 16290948496 + 10094930271504 = 127636^2 + 3177252^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 252760531 + ... + 252800530.

Almost surely, 2^{10111221220000} is an apocalyptic number.

10111221220000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10111221220000 is an abundant number, since it is smaller than the sum of its proper divisors (14763899713586).

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

10111221220000 is an frugal number, since it uses more digits than its factorization.

10111221220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505561091 (or 505561068 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10111221220000 its reverse (2212211101), we get a palindrome (10113433431101).

The spelling of 10111221220000 in words is "ten trillion, one hundred eleven billion, two hundred twenty-one million, two hundred twenty thousand".