1141111020 has 72 divisors (see below), whose sum is σ = 3716771184. Its totient is φ = 260824704.

The previous prime is 1141110989. The next prime is 1141111021. The reversal of 1141111020 is 201111411.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1141110987 and 1141111005.

It is not an unprimeable number, because it can be changed into a prime (1141111021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 191127 + ... + 197006.

It is an arithmetic number, because the mean of its divisors is an integer number (51621822).

Almost surely, 2^1141111020 is an apocalyptic number.

1141111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1141111020 is an abundant number, since it is smaller than the sum of its proper divisors (2575660164).

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

1141111020 is a wasteful number, since it uses less digits than its factorization.

1141111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388159 (or 388150 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 1141111020 is about 33780.3348118399. The cubic root of 1141111020 is about 1044.9831792963.

Adding to 1141111020 its reverse (201111411), we get a palindrome (1342222431).

The spelling of 1141111020 in words is "one billion, one hundred forty-one million, one hundred eleven thousand, twenty".