20210112012111 has 16 divisors (see below), whose sum is σ = 31547491922688. Its totient is φ = 11266961400000.

The previous prime is 20210112012091. The next prime is 20210112012143. The reversal of 20210112012111 is 11121021101202.

It is a happy number.

It is not a de Polignac number, because 20210112012111 - 2¹³ = 20210112003919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210112012011) 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, 11736417265 + ... + 11736418986.

It is an arithmetic number, because the mean of its divisors is an integer number (1971718245168).

Almost surely, 2^{20210112012111} is an apocalyptic number.

20210112012111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20210112012111 is a deficient number, since it is larger than the sum of its proper divisors (11337379910577).

20210112012111 is a wasteful number, since it uses less digits than its factorization.

20210112012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23472836302.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20210112012111 its reverse (11121021101202), we get a palindrome (31331133113313).

The spelling of 20210112012111 in words is "twenty trillion, two hundred ten billion, one hundred twelve million, twelve thousand, one hundred eleven".