112121220221000 has 64 divisors (see below), whose sum is σ = 262387079725680. Its totient is φ = 44844483916800.

The previous prime is 112121220220979. The next prime is 112121220221011. The reversal of 112121220221000 is 122022121211.

It can be written as a sum of positive squares in 8 ways, for example, as 1464327488836 + 110656892732164 = 1210094^2 + 10519358^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 112121220221000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6213392 + ... + 16212608.

Almost surely, 2^{112121220221000} is an apocalyptic number.

112121220221000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

112121220221000 is an abundant number, since it is smaller than the sum of its proper divisors (150265859504680).

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

112121220221000 is a wasteful number, since it uses less digits than its factorization.

112121220221000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10010451 (or 10010437 counting only the distinct ones).

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

Adding to 112121220221000 its reverse (122022121211), we get a palindrome (112243242342211).

The spelling of 112121220221000 in words is "one hundred twelve trillion, one hundred twenty-one billion, two hundred twenty million, two hundred twenty-one thousand".