20100312111 has 8 divisors (see below), whose sum is σ = 29236817664. Its totient is φ = 12182007320.

The previous prime is 20100312109. The next prime is 20100312131. The reversal of 20100312111 is 11121300102.

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 20100312111 - 2¹ = 20100312109 is a prime.

It is a super-2 number, since 2×20100312111² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100312131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304550151 + ... + 304550216.

It is an arithmetic number, because the mean of its divisors is an integer number (3654602208).

Almost surely, 2^20100312111 is an apocalyptic number.

20100312111 is a deficient number, since it is larger than the sum of its proper divisors (9136505553).

20100312111 is a wasteful number, since it uses less digits than its factorization.

20100312111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609100381.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 20100312111 its reverse (11121300102), we get a palindrome (31221612213).

The spelling of 20100312111 in words is "twenty billion, one hundred million, three hundred twelve thousand, one hundred eleven".