12021131221029 has 12 divisors (see below), whose sum is σ = 19844407095136. Its totient is φ = 6869217840552.

The previous prime is 12021131221009. The next prime is 12021131221037. The reversal of 12021131221029 is 92012213112021.

12021131221029 is a `hidden beast` number, since 120 + 2 + 11 + 312 + 210 + 2 + 9 = 666.

It is not a de Polignac number, because 12021131221029 - 2⁴⁰ = 10921619593253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12021131220993 and 12021131221011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021131221009) 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, 95405803279 + ... + 95405803404.

Almost surely, 2^{12021131221029} is an apocalyptic number.

It is an amenable number.

12021131221029 is a deficient number, since it is larger than the sum of its proper divisors (7823275874107).

12021131221029 is a wasteful number, since it uses less digits than its factorization.

12021131221029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190811606696 (or 190811606693 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The spelling of 12021131221029 in words is "twelve trillion, twenty-one billion, one hundred thirty-one million, two hundred twenty-one thousand, twenty-nine".