211110011221021 has 16 divisors (see below), whose sum is σ = 245146833115200. Its totient is φ = 179774344252800.

The previous prime is 211110011221019. The next prime is 211110011221037. The reversal of 211110011221021 is 120122110011112.

It is not a de Polignac number, because 211110011221021 - 2¹ = 211110011221019 is a prime.

It is a super-2 number, since 2×211110011221021² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211110011220986 and 211110011221004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211110011221091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5674676610 + ... + 5674713811.

It is an arithmetic number, because the mean of its divisors is an integer number (15321677069700).

Almost surely, 2^{211110011221021} is an apocalyptic number.

It is an amenable number.

211110011221021 is a deficient number, since it is larger than the sum of its proper divisors (34036821894179).

211110011221021 is a wasteful number, since it uses less digits than its factorization.

211110011221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11349390540.

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

Adding to 211110011221021 its reverse (120122110011112), we get a palindrome (331232121232133).

The spelling of 211110011221021 in words is "two hundred eleven trillion, one hundred ten billion, eleven million, two hundred twenty-one thousand, twenty-one".