21120100022211 has 16 divisors (see below), whose sum is σ = 29384969135616. Its totient is φ = 13467668884736.

The previous prime is 21120100022183. The next prime is 21120100022251. The reversal of 21120100022211 is 11222000102112.

It is a cyclic number.

It is not a de Polignac number, because 21120100022211 - 2¹¹ = 21120100020163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21120100022251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1777171 + ... + 6737843.

It is an arithmetic number, because the mean of its divisors is an integer number (1836560570976).

Almost surely, 2^{21120100022211} is an apocalyptic number.

21120100022211 is a deficient number, since it is larger than the sum of its proper divisors (8264869113405).

21120100022211 is a wasteful number, since it uses less digits than its factorization.

21120100022211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5022402.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21120100022211 its reverse (11222000102112), we get a palindrome (32342100124323).

The spelling of 21120100022211 in words is "twenty-one trillion, one hundred twenty billion, one hundred million, twenty-two thousand, two hundred eleven".