211222112211110 has 128 divisors (see below), whose sum is σ = 511790348160000. Its totient is φ = 60614971845120.

The previous prime is 211222112211023. The next prime is 211222112211113. The reversal of 211222112211110 is 11112211222112.

It is a happy number.

211222112211110 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×211222112211110² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211222112211113) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23228360 + ... + 31016139.

It is an arithmetic number, because the mean of its divisors is an integer number (3998362095000).

Almost surely, 2^{211222112211110} is an apocalyptic number.

211222112211110 is an abundant number, since it is smaller than the sum of its proper divisors (300568235948890).

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

211222112211110 is a wasteful number, since it uses less digits than its factorization.

211222112211110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54244926.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 211222112211110 its reverse (11112211222112), we get a palindrome (222334323433222).

The spelling of 211222112211110 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred twelve million, two hundred eleven thousand, one hundred ten".