20000112121111 has 16 divisors (see below), whose sum is σ = 20737780539840. Its totient is φ = 19265694497280.

The previous prime is 20000112121109. The next prime is 20000112121141. The reversal of 20000112121111 is 11112121100002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20000112121111 - 2¹ = 20000112121109 is a prime.

It is a super-2 number, since 2×20000112121111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20000112121091 and 20000112121100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000112121141) 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, 21922015 + ... + 22816111.

It is an arithmetic number, because the mean of its divisors is an integer number (1296111283740).

Almost surely, 2^{20000112121111} is an apocalyptic number.

20000112121111 is a deficient number, since it is larger than the sum of its proper divisors (737668418729).

20000112121111 is a wasteful number, since it uses less digits than its factorization.

20000112121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895914.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20000112121111 its reverse (11112121100002), we get a palindrome (31112233221113).

The spelling of 20000112121111 in words is "twenty trillion, one hundred twelve million, one hundred twenty-one thousand, one hundred eleven".