20112012121211 has 8 divisors (see below), whose sum is σ = 20189844279264. Its totient is φ = 20034297803520.

The previous prime is 20112012121189. The next prime is 20112012121247. The reversal of 20112012121211 is 11212121021102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20112012121211 - 2⁶ = 20112012121147 is a prime.

It is a super-2 number, since 2×20112012121211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20112012121211.

It is not an unprimeable number, because it can be changed into a prime (20112012121261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29118080 + ... + 29800781.

It is an arithmetic number, because the mean of its divisors is an integer number (2523730534908).

Almost surely, 2^{20112012121211} is an apocalyptic number.

20112012121211 is a deficient number, since it is larger than the sum of its proper divisors (77832158053).

20112012121211 is an equidigital number, since it uses as much as digits as its factorization.

20112012121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58920181.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 20112012121211 its reverse (11212121021102), we get a palindrome (31324133142313).

The spelling of 20112012121211 in words is "twenty trillion, one hundred twelve billion, twelve million, one hundred twenty-one thousand, two hundred eleven".