1115211110542 has 4 divisors (see below), whose sum is σ = 1672816665816. Its totient is φ = 557605555270.

The previous prime is 1115211110539. The next prime is 1115211110579. The reversal of 1115211110542 is 2450111125111.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278802777634 + ... + 278802777637.

It is an arithmetic number, because the mean of its divisors is an integer number (418204166454).

Almost surely, 2^{1115211110542} is an apocalyptic number.

1115211110542 is a deficient number, since it is larger than the sum of its proper divisors (557605555274).

1115211110542 is an equidigital number, since it uses as much as digits as its factorization.

1115211110542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557605555273.

The product of its (nonzero) digits is 400, while the sum is 25.

Adding to 1115211110542 its reverse (2450111125111), we get a palindrome (3565322235653).

The spelling of 1115211110542 in words is "one trillion, one hundred fifteen billion, two hundred eleven million, one hundred ten thousand, five hundred forty-two".