12021110221234 has 32 divisors (see below), whose sum is σ = 18614486992752. Its totient is φ = 5818589184000.

The previous prime is 12021110221181. The next prime is 12021110221273. The reversal of 12021110221234 is 43212201112021.

It can be written as a sum of positive squares in 8 ways, for example, as 5576696419009 + 6444413802225 = 2361503^2 + 2538585^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25390194 + ... + 25859314.

Almost surely, 2^{12021110221234} is an apocalyptic number.

12021110221234 is a deficient number, since it is larger than the sum of its proper divisors (6593376771518).

12021110221234 is a wasteful number, since it uses less digits than its factorization.

12021110221234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471582.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 12021110221234 its reverse (43212201112021), we get a palindrome (55233311333255).

The spelling of 12021110221234 in words is "twelve trillion, twenty-one billion, one hundred ten million, two hundred twenty-one thousand, two hundred thirty-four".