111122021212 has 6 divisors (see below), whose sum is σ = 194463537128. Its totient is φ = 55561010604.

The previous prime is 111122021209. The next prime is 111122021249. The reversal of 111122021212 is 212120221111.

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, 13890252648 + ... + 13890252655.

Almost surely, 2^111122021212 is an apocalyptic number.

It is an amenable number.

111122021212 is a deficient number, since it is larger than the sum of its proper divisors (83341515916).

111122021212 is a wasteful number, since it uses less digits than its factorization.

111122021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27780505307 (or 27780505305 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111122021212 its reverse (212120221111), we get a palindrome (323242242323).

The spelling of 111122021212 in words is "one hundred eleven billion, one hundred twenty-two million, twenty-one thousand, two hundred twelve".