211121012222 has 4 divisors (see below), whose sum is σ = 316681518336. Its totient is φ = 105560506110.

The previous prime is 211121012147. The next prime is 211121012273. The reversal of 211121012222 is 222210121112.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 211121012222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52780253054 + ... + 52780253057.

It is an arithmetic number, because the mean of its divisors is an integer number (79170379584).

Almost surely, 2^211121012222 is an apocalyptic number.

211121012222 is a deficient number, since it is larger than the sum of its proper divisors (105560506114).

211121012222 is a wasteful number, since it uses less digits than its factorization.

211121012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105560506113.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 211121012222 its reverse (222210121112), we get a palindrome (433331133334).

The spelling of 211121012222 in words is "two hundred eleven billion, one hundred twenty-one million, twelve thousand, two hundred twenty-two".