211210000122222 has 48 divisors (see below), whose sum is σ = 462158514876240. Its totient is φ = 69705374688000.

The previous prime is 211210000122169. The next prime is 211210000122263. The reversal of 211210000122222 is 222221000012112.

It is a happy number.

211210000122222 is a `hidden beast` number, since 211 + 210 + 0 + 0 + 0 + 1 + 22 + 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 = 211210000122195 and 211210000122204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148986822 + ... + 150397782.

It is an arithmetic number, because the mean of its divisors is an integer number (9628302393255).

Almost surely, 2^{211210000122222} is an apocalyptic number.

211210000122222 is an abundant number, since it is smaller than the sum of its proper divisors (250948514754018).

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

211210000122222 is a wasteful number, since it uses less digits than its factorization.

211210000122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493409 (or 1493406 counting only the distinct ones).

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

Adding to 211210000122222 its reverse (222221000012112), we get a palindrome (433431000134334).

The spelling of 211210000122222 in words is "two hundred eleven trillion, two hundred ten billion, one hundred twenty-two thousand, two hundred twenty-two".