20111200212021 has 16 divisors (see below), whose sum is σ = 27025155537408. Its totient is φ = 13302570582000.

The previous prime is 20111200212013. The next prime is 20111200212031. The reversal of 20111200212021 is 12021200211102.

It is not a de Polignac number, because 20111200212021 - 2³ = 20111200212013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111200212031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26466715 + ... + 27215976.

It is an arithmetic number, because the mean of its divisors is an integer number (1689072221088).

Almost surely, 2^{20111200212021} is an apocalyptic number.

It is an amenable number.

20111200212021 is a deficient number, since it is larger than the sum of its proper divisors (6913955325387).

20111200212021 is a wasteful number, since it uses less digits than its factorization.

20111200212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53683672.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20111200212021 its reverse (12021200211102), we get a palindrome (32132400423123).

The spelling of 20111200212021 in words is "twenty trillion, one hundred eleven billion, two hundred million, two hundred twelve thousand, twenty-one".