511111121106 has 16 divisors (see below), whose sum is σ = 1045994853024. Its totient is φ = 166408271904.

The previous prime is 511111121083. The next prime is 511111121113. The reversal of 511111121106 is 601121111115.

It is a super-2 number, since 2×511111121106² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 990525171 + ... + 990525686.

It is an arithmetic number, because the mean of its divisors is an integer number (65374678314).

Almost surely, 2^511111121106 is an apocalyptic number.

511111121106 is an abundant number, since it is smaller than the sum of its proper divisors (534883731918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

511111121106 is a wasteful number, since it uses less digits than its factorization.

511111121106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1981050905.

The product of its (nonzero) digits is 60, while the sum is 21.

Subtracting 511111121106 from its reverse (601121111115), we obtain a palindrome (90009990009).

The spelling of 511111121106 in words is "five hundred eleven billion, one hundred eleven million, one hundred twenty-one thousand, one hundred six".