20112121000111 has 8 divisors (see below), whose sum is σ = 24337356504480. Its totient is φ = 16224904336128.

The previous prime is 20112121000057. The next prime is 20112121000133. The reversal of 20112121000111 is 11100012121102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20112121000111 - 2²⁷ = 20111986782383 is a prime.

It is a super-2 number, since 2×20112121000111² (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 = 20112121000091 and 20112121000100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112121300111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84504709966 + ... + 84504710203.

It is an arithmetic number, because the mean of its divisors is an integer number (3042169563060).

Almost surely, 2^{20112121000111} is an apocalyptic number.

20112121000111 is a deficient number, since it is larger than the sum of its proper divisors (4225235504369).

20112121000111 is a wasteful number, since it uses less digits than its factorization.

20112121000111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169009420193.

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

Adding to 20112121000111 its reverse (11100012121102), we get a palindrome (31212133121213).

The spelling of 20112121000111 in words is "twenty trillion, one hundred twelve billion, one hundred twenty-one million, one hundred eleven", and thus it is an aban number.