20112143011 has 4 divisors (see below), whose sum is σ = 20113856224. Its totient is φ = 20110429800.

The previous prime is 20112143003. The next prime is 20112143053. The reversal of 20112143011 is 11034121102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11034121102 = 2 ⋅5517060551.

It is a cyclic number.

It is not a de Polignac number, because 20112143011 - 2³ = 20112143003 is a prime.

It is a super-2 number, since 2×20112143011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20112143111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 838875 + ... + 862516.

It is an arithmetic number, because the mean of its divisors is an integer number (5028464056).

Almost surely, 2^20112143011 is an apocalyptic number.

20112143011 is a deficient number, since it is larger than the sum of its proper divisors (1713213).

20112143011 is a wasteful number, since it uses less digits than its factorization.

20112143011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1713212.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20112143011 its reverse (11034121102), we get a palindrome (31146264113).

The spelling of 20112143011 in words is "twenty billion, one hundred twelve million, one hundred forty-three thousand, eleven".