12021012211122 has 24 divisors (see below), whose sum is σ = 27010175586576. Its totient is φ = 4007004070212.

The previous prime is 12021012211121. The next prime is 12021012211129. The reversal of 12021012211122 is 22111221012021.

12021012211122 is a `hidden beast` number, since 120 + 210 + 1 + 2 + 211 + 122 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12021012211095 and 12021012211104.

It is not an unprimeable number, because it can be changed into a prime (12021012211121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12367296028 + ... + 12367296999.

It is an arithmetic number, because the mean of its divisors is an integer number (1125423982774).

Almost surely, 2^{12021012211122} is an apocalyptic number.

12021012211122 is an abundant number, since it is smaller than the sum of its proper divisors (14989163375454).

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

12021012211122 is an equidigital number, since it uses as much as digits as its factorization.

12021012211122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24734593044 (or 24734593032 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12021012211122 its reverse (22111221012021), we get a palindrome (34132233223143).

The spelling of 12021012211122 in words is "twelve trillion, twenty-one billion, twelve million, two hundred eleven thousand, one hundred twenty-two".