211222022040 has 96 divisors (see below), whose sum is σ = 687629891520. Its totient is φ = 56230831104.

The previous prime is 211222021993. The next prime is 211222022041. The reversal of 211222022040 is 40220222112.

It is a super-2 number, since 2×211222022040² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211222022041) 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 23 ways as a sum of consecutive naturals, for example, 281232 + ... + 708191.

It is an arithmetic number, because the mean of its divisors is an integer number (7162811370).

Almost surely, 2^211222022040 is an apocalyptic number.

211222022040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211222022040 is an abundant number, since it is smaller than the sum of its proper divisors (476407869480).

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

211222022040 is a wasteful number, since it uses less digits than its factorization.

211222022040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990033 (or 990026 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 211222022040 its reverse (40220222112), we get a palindrome (251442244152).

The spelling of 211222022040 in words is "two hundred eleven billion, two hundred twenty-two million, twenty-two thousand, forty".