111110212212021 has 48 divisors (see below), whose sum is σ = 187632756754560. Its totient is φ = 62670859954560.

The previous prime is 111110212212019. The next prime is 111110212212037. The reversal of 111110212212021 is 120212212011111.

It is a happy number.

111110212212021 is a `hidden beast` number, since 111 + 110 + 21 + 221 + 202 + 1 = 666.

It is not a de Polignac number, because 111110212212021 - 2¹ = 111110212212019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111110212211985 and 111110212212003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111110212212421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 659331366 + ... + 659499863.

It is an arithmetic number, because the mean of its divisors is an integer number (3909015765720).

Almost surely, 2^{111110212212021} is an apocalyptic number.

111110212212021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111110212212021 is a deficient number, since it is larger than the sum of its proper divisors (76522544542539).

111110212212021 is a wasteful number, since it uses less digits than its factorization.

111110212212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318831306 (or 1318831303 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111110212212021 its reverse (120212212011111), we get a palindrome (231322424223132).

The spelling of 111110212212021 in words is "one hundred eleven trillion, one hundred ten billion, two hundred twelve million, two hundred twelve thousand, twenty-one".