211120221001220 has 24 divisors (see below), whose sum is σ = 443386404210624. Its totient is φ = 84441623618016.

The previous prime is 211120221001159. The next prime is 211120221001253. The reversal of 211120221001220 is 22100122021112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 403781114 + ... + 404303633.

It is an arithmetic number, because the mean of its divisors is an integer number (18474433508776).

Almost surely, 2^{211120221001220} is an apocalyptic number.

211120221001220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211120221001220 is an abundant number, since it is smaller than the sum of its proper divisors (232266183209404).

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

211120221001220 is a wasteful number, since it uses less digits than its factorization.

211120221001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808097819 (or 808097817 counting only the distinct ones).

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

Adding to 211120221001220 its reverse (22100122021112), we get a palindrome (233220343022332).

The spelling of 211120221001220 in words is "two hundred eleven trillion, one hundred twenty billion, two hundred twenty-one million, one thousand, two hundred twenty".