1011042100243 has 4 divisors (see below), whose sum is σ = 1155476686000. Its totient is φ = 866607514488.

The previous prime is 1011042100177. The next prime is 1011042100249. The reversal of 1011042100243 is 3420012401101.

1011042100243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 1011042100243 - 2¹³ = 1011042092051 is a prime.

It is a super-2 number, since 2×1011042100243² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1011042100243.

It is not an unprimeable number, because it can be changed into a prime (1011042100249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72217292868 + ... + 72217292881.

It is an arithmetic number, because the mean of its divisors is an integer number (288869171500).

Almost surely, 2^{1011042100243} is an apocalyptic number.

1011042100243 is a deficient number, since it is larger than the sum of its proper divisors (144434585757).

1011042100243 is an equidigital number, since it uses as much as digits as its factorization.

1011042100243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144434585756.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1011042100243 its reverse (3420012401101), we get a palindrome (4431054501344).

The spelling of 1011042100243 in words is "one trillion, eleven billion, forty-two million, one hundred thousand, two hundred forty-three".