111212010022 has 4 divisors (see below), whose sum is σ = 166818015036. Its totient is φ = 55606005010.

The previous prime is 111212009981. The next prime is 111212010029. The reversal of 111212010022 is 220010212111.

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

It is a super-2 number, since 2×111212010022² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111212009984 and 111212010011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212010029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27803002504 + ... + 27803002507.

It is an arithmetic number, because the mean of its divisors is an integer number (41704503759).

Almost surely, 2^111212010022 is an apocalyptic number.

111212010022 is a deficient number, since it is larger than the sum of its proper divisors (55606005014).

111212010022 is an equidigital number, since it uses as much as digits as its factorization.

111212010022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55606005013.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 111212010022 its reverse (220010212111), we get a palindrome (331222222133).

The spelling of 111212010022 in words is "one hundred eleven billion, two hundred twelve million, ten thousand, twenty-two".