211002001221222 has 24 divisors (see below), whose sum is σ = 457182847039464. Its totient is φ = 70332178192704.

The previous prime is 211002001221181. The next prime is 211002001221223. The reversal of 211002001221222 is 222122100200112.

It is a happy number.

211002001221222 is a `hidden beast` number, since 21 + 1 + 0 + 0 + 200 + 1 + 221 + 222 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 211002001221195 and 211002001221204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211002001221223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 151137043 + ... + 152526750.

It is an arithmetic number, because the mean of its divisors is an integer number (19049285293311).

Almost surely, 2^{211002001221222} is an apocalyptic number.

211002001221222 is an abundant number, since it is smaller than the sum of its proper divisors (246180845818242).

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

211002001221222 is a wasteful number, since it uses less digits than its factorization.

211002001221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303702404 (or 303702401 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 211002001221222 its reverse (222122100200112), we get a palindrome (433124101421334).

The spelling of 211002001221222 in words is "two hundred eleven trillion, two billion, one million, two hundred twenty-one thousand, two hundred twenty-two".