10000211221220 has 96 divisors (see below), whose sum is σ = 24254738686080. Its totient is φ = 3425135016960.

The previous prime is 10000211221211. The next prime is 10000211221243. The reversal of 10000211221220 is 2212211200001.

It is a junction number, because it is equal to n+sod(n) for n = 10000211221195 and 10000211221204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6191297 + ... + 7637576.

It is an arithmetic number, because the mean of its divisors is an integer number (252653527980).

Almost surely, 2^{10000211221220} is an apocalyptic number.

10000211221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10000211221220 is an abundant number, since it is smaller than the sum of its proper divisors (14254527464860).

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

10000211221220 is a wasteful number, since it uses less digits than its factorization.

10000211221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13829085 (or 13829083 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 10000211221220 its reverse (2212211200001), we get a palindrome (12212422421221).

The spelling of 10000211221220 in words is "ten trillion, two hundred eleven million, two hundred twenty-one thousand, two hundred twenty".