20212012121011 has 4 divisors (see below), whose sum is σ = 20213415065392. Its totient is φ = 20210609176632.

The previous prime is 20212012120997. The next prime is 20212012121017. The reversal of 20212012121011 is 11012121021202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20212012121011 - 2³³ = 20203422186419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20212012121017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 701450580 + ... + 701479393.

It is an arithmetic number, because the mean of its divisors is an integer number (5053353766348).

Almost surely, 2^{20212012121011} is an apocalyptic number.

20212012121011 is a deficient number, since it is larger than the sum of its proper divisors (1402944381).

20212012121011 is a wasteful number, since it uses less digits than its factorization.

20212012121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402944380.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20212012121011 its reverse (11012121021202), we get a palindrome (31224133142213).

The spelling of 20212012121011 in words is "twenty trillion, two hundred twelve billion, twelve million, one hundred twenty-one thousand, eleven".