111212012001022 has 4 divisors (see below), whose sum is σ = 166818018001536. Its totient is φ = 55606006000510.

The previous prime is 111212012000953. The next prime is 111212012001023. The reversal of 111212012001022 is 220100210212111.

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

It is a super-2 number, since 2×111212012001022² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111212012000987 and 111212012001005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212012001023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27803003000254 + ... + 27803003000257.

It is an arithmetic number, because the mean of its divisors is an integer number (41704504500384).

Almost surely, 2^{111212012001022} is an apocalyptic number.

111212012001022 is a deficient number, since it is larger than the sum of its proper divisors (55606006000514).

111212012001022 is an equidigital number, since it uses as much as digits as its factorization.

111212012001022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55606006000513.

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

Adding to 111212012001022 its reverse (220100210212111), we get a palindrome (331312222213133).

The spelling of 111212012001022 in words is "one hundred eleven trillion, two hundred twelve billion, twelve million, one thousand, twenty-two".