111211210122 has 8 divisors (see below), whose sum is σ = 222422420256. Its totient is φ = 37070403372.

The previous prime is 111211210091. The next prime is 111211210141. The reversal of 111211210122 is 221012112111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

111211210122 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9267600838 + ... + 9267600849.

It is an arithmetic number, because the mean of its divisors is an integer number (27802802532).

Almost surely, 2^111211210122 is an apocalyptic number.

111211210122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

111211210122 is a wasteful number, since it uses less digits than its factorization.

111211210122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18535201692.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111211210122 its reverse (221012112111), we get a palindrome (332223322233).

The spelling of 111211210122 in words is "one hundred eleven billion, two hundred eleven million, two hundred ten thousand, one hundred twenty-two".