212020121220111 has 12 divisors (see below), whose sum is σ = 306251460293688. Its totient is φ = 141346667132304.

The previous prime is 212020121220079. The next prime is 212020121220119. The reversal of 212020121220111 is 111022121020212.

212020121220111 is a `hidden beast` number, since 2 + 120 + 201 + 212 + 20 + 111 = 666.

It is not a de Polignac number, because 212020121220111 - 2⁵ = 212020121220079 is a prime.

It is a super-3 number, since 3×212020121220111³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212020121220119) 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, 13095541 + ... + 24403553.

It is an arithmetic number, because the mean of its divisors is an integer number (25520955024474).

Almost surely, 2^{212020121220111} is an apocalyptic number.

212020121220111 is a deficient number, since it is larger than the sum of its proper divisors (94231339073577).

212020121220111 is a wasteful number, since it uses less digits than its factorization.

212020121220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13391302 (or 13391299 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 212020121220111 its reverse (111022121020212), we get a palindrome (323042242240323).

The spelling of 212020121220111 in words is "two hundred twelve trillion, twenty billion, one hundred twenty-one million, two hundred twenty thousand, one hundred eleven".