111354100020 has 72 divisors (see below), whose sum is σ = 339288907776. Its totient is φ = 29561257152.

The previous prime is 111354100003. The next prime is 111354100073. The reversal of 111354100020 is 20001453111.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 111354099966 and 111354100002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1346932 + ... + 1427211.

Almost surely, 2^111354100020 is an apocalyptic number.

111354100020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111354100020 is an abundant number, since it is smaller than the sum of its proper divisors (227934807756).

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

111354100020 is a wasteful number, since it uses less digits than its factorization.

111354100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2774381 (or 2774376 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

Adding to 111354100020 its reverse (20001453111), we get a palindrome (131355553131).

The spelling of 111354100020 in words is "one hundred eleven billion, three hundred fifty-four million, one hundred thousand, twenty".