1111101043781 has 8 divisors (see below), whose sum is σ = 1114536941184. Its totient is φ = 1107669326400.

The previous prime is 1111101043777. The next prime is 1111101043783. The reversal of 1111101043781 is 1873401011111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1111101043781 - 2² = 1111101043777 is a prime.

It is a super-2 number, since 2×1111101043781² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 512141 + ... + 1576226.

It is an arithmetic number, because the mean of its divisors is an integer number (139317117648).

Almost surely, 2^{1111101043781} is an apocalyptic number.

It is an amenable number.

1111101043781 is a deficient number, since it is larger than the sum of its proper divisors (3435897403).

1111101043781 is a wasteful number, since it uses less digits than its factorization.

1111101043781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2090011.

The product of its (nonzero) digits is 672, while the sum is 29.

Adding to 1111101043781 its reverse (1873401011111), we get a palindrome (2984502054892).

The spelling of 1111101043781 in words is "one trillion, one hundred eleven billion, one hundred one million, forty-three thousand, seven hundred eighty-one".