1111101043780 has 192 divisors, whose sum is σ = 3012145661952. Its totient is φ = 334860687360.

The previous prime is 1111101043777. The next prime is 1111101043783. The reversal of 1111101043780 is 873401011111.

It is an interprime number because it is at equal distance from previous prime (1111101043777) and next prime (1111101043783).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (1111101043783) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2989450 + ... + 3340510.

It is an arithmetic number, because the mean of its divisors is an integer number (15688258656).

Almost surely, 2^{1111101043780} is an apocalyptic number.

1111101043780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1111101043780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1506072830976).

1111101043780 is an abundant number, since it is smaller than the sum of its proper divisors (1901044618172).

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

1111101043780 is a wasteful number, since it uses less digits than its factorization.

1111101043780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351174 (or 351172 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 28.

Adding to 1111101043780 its reverse (873401011111), we get a palindrome (1984502054891).

The spelling of 1111101043780 in words is "one trillion, one hundred eleven billion, one hundred one million, forty-three thousand, seven hundred eighty".