2020012121111 has 16 divisors (see below), whose sum is σ = 2051646293088. Its totient is φ = 1988638080000.

The previous prime is 2020012121077. The next prime is 2020012121159. The reversal of 2020012121111 is 1111212100202.

It is a cyclic number.

It is not a de Polignac number, because 2020012121111 - 2³⁸ = 1745134214167 is a prime.

It is a super-2 number, since 2×2020012121111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020012121411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12597140 + ... + 12756486.

It is an arithmetic number, because the mean of its divisors is an integer number (128227893318).

Almost surely, 2^{2020012121111} is an apocalyptic number.

2020012121111 is a deficient number, since it is larger than the sum of its proper divisors (31634171977).

2020012121111 is a wasteful number, since it uses less digits than its factorization.

2020012121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160162.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2020012121111 its reverse (1111212100202), we get a palindrome (3131224221313).

The spelling of 2020012121111 in words is "two trillion, twenty billion, twelve million, one hundred twenty-one thousand, one hundred eleven".