20031212021211 has 72 divisors (see below), whose sum is σ = 30864995454384. Its totient is φ = 12475303557120.

The previous prime is 20031212021207. The next prime is 20031212021237. The reversal of 20031212021211 is 11212021213002.

20031212021211 is a `hidden beast` number, since 2 + 0 + 0 + 312 + 120 + 21 + 211 = 666.

It is not a de Polignac number, because 20031212021211 - 2² = 20031212021207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20031212021311) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2877630771 + ... + 2877637731.

It is an arithmetic number, because the mean of its divisors is an integer number (428680492422).

Almost surely, 2^{20031212021211} is an apocalyptic number.

20031212021211 is a deficient number, since it is larger than the sum of its proper divisors (10833783433173).

20031212021211 is a wasteful number, since it uses less digits than its factorization.

20031212021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7929 (or 7747 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 20031212021211 its reverse (11212021213002), we get a palindrome (31243233234213).

The spelling of 20031212021211 in words is "twenty trillion, thirty-one billion, two hundred twelve million, twenty-one thousand, two hundred eleven".