212122222101 has 48 divisors (see below), whose sum is σ = 331209216000. Its totient is φ = 130412449440.

The previous prime is 212122222079. The next prime is 212122222127. The reversal of 212122222101 is 101222221212.

It is a happy number.

212122222101 is a `hidden beast` number, since 21 + 212 + 222 + 210 + 1 = 666.

212122222101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212122222101 - 2⁹ = 212122221589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212122222601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 848560 + ... + 1069718.

It is an arithmetic number, because the mean of its divisors is an integer number (6900192000).

Almost surely, 2^212122222101 is an apocalyptic number.

It is an amenable number.

212122222101 is a deficient number, since it is larger than the sum of its proper divisors (119086993899).

212122222101 is a wasteful number, since it uses less digits than its factorization.

212122222101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221334 (or 221331 counting only the distinct ones).

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

Adding to 212122222101 its reverse (101222221212), we get a palindrome (313344443313).

The spelling of 212122222101 in words is "two hundred twelve billion, one hundred twenty-two million, two hundred twenty-two thousand, one hundred one".