211210311111122 has 4 divisors (see below), whose sum is σ = 316815466666686. Its totient is φ = 105605155555560.

The previous prime is 211210311111077. The next prime is 211210311111139. The reversal of 211210311111122 is 221111113012112.

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

It can be written as a sum of positive squares in only one way, i.e., 140579414111161 + 70630896999961 = 11856619^2 + 8404219^2 .

It is a junction number, because it is equal to n+sod(n) for n = 211210311111094 and 211210311111103.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52802577777779 + ... + 52802577777782.

Almost surely, 2^{211210311111122} is an apocalyptic number.

211210311111122 is a deficient number, since it is larger than the sum of its proper divisors (105605155555564).

211210311111122 is a wasteful number, since it uses less digits than its factorization.

211210311111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105605155555563.

The product of its (nonzero) digits is 48, while the sum is 20.

Adding to 211210311111122 its reverse (221111113012112), we get a palindrome (432321424123234).

The spelling of 211210311111122 in words is "two hundred eleven trillion, two hundred ten billion, three hundred eleven million, one hundred eleven thousand, one hundred twenty-two".