2121211110222 has 24 divisors (see below), whose sum is σ = 4720172471976. Its totient is φ = 687960359856.

The previous prime is 2121211110197. The next prime is 2121211110223. The reversal of 2121211110222 is 2220111121212.

2121211110222 is a `hidden beast` number, since 2 + 121 + 211 + 110 + 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 = 2121211110195 and 2121211110204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121211110223) 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, 1592500168 + ... + 1592501499.

It is an arithmetic number, because the mean of its divisors is an integer number (196673852999).

Almost surely, 2^{2121211110222} is an apocalyptic number.

2121211110222 is an abundant number, since it is smaller than the sum of its proper divisors (2598961361754).

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

2121211110222 is a wasteful number, since it uses less digits than its factorization.

2121211110222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3185001712 (or 3185001709 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2121211110222 its reverse (2220111121212), we get a palindrome (4341322231434).

The spelling of 2121211110222 in words is "two trillion, one hundred twenty-one billion, two hundred eleven million, one hundred ten thousand, two hundred twenty-two".