211222220013 has 24 divisors (see below), whose sum is σ = 358108203648. Its totient is φ = 117436290912.

The previous prime is 211222220003. The next prime is 211222220021. The reversal of 211222220013 is 310022222112.

211222220013 is a `hidden beast` number, since 211 + 222 + 220 + 0 + 13 = 666.

It is not a de Polignac number, because 211222220013 - 2⁴ = 211222219997 is a prime.

It is a super-2 number, since 2×211222220013² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211222220003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45304881 + ... + 45309542.

It is an arithmetic number, because the mean of its divisors is an integer number (14921175152).

Almost surely, 2^211222220013 is an apocalyptic number.

It is an amenable number.

211222220013 is a deficient number, since it is larger than the sum of its proper divisors (146885983635).

211222220013 is a wasteful number, since it uses less digits than its factorization.

211222220013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90614473 (or 90614470 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 211222220013 its reverse (310022222112), we get a palindrome (521244442125).

The spelling of 211222220013 in words is "two hundred eleven billion, two hundred twenty-two million, two hundred twenty thousand, thirteen".