111012443454551 has 16 divisors (see below), whose sum is σ = 112794430795200. Its totient is φ = 109237539299328.

The previous prime is 111012443454533. The next prime is 111012443454587. The reversal of 111012443454551 is 155454344210111.

It is not a de Polignac number, because 111012443454551 - 2³⁸ = 110737565547607 is a prime.

It is a super-2 number, since 2×111012443454551² (a number of 29 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 = 111012443454499 and 111012443454508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012443451551) 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, 900362915 + ... + 900486203.

It is an arithmetic number, because the mean of its divisors is an integer number (7049651924700).

Almost surely, 2^{111012443454551} is an apocalyptic number.

111012443454551 is a deficient number, since it is larger than the sum of its proper divisors (1781987340649).

111012443454551 is a wasteful number, since it uses less digits than its factorization.

111012443454551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151898.

The product of its (nonzero) digits is 192000, while the sum is 41.

Adding to 111012443454551 its reverse (155454344210111), we get a palindrome (266466787664662).

The spelling of 111012443454551 in words is "one hundred eleven trillion, twelve billion, four hundred forty-three million, four hundred fifty-four thousand, five hundred fifty-one".