1121402124111 has 4 divisors (see below), whose sum is σ = 1495202832152. Its totient is φ = 747601416072.

The previous prime is 1121402124071. The next prime is 1121402124131. The reversal of 1121402124111 is 1114212041211.

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

It is not a de Polignac number, because 1121402124111 - 2⁹ = 1121402123599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121402124131) 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, 186900354016 + ... + 186900354021.

It is an arithmetic number, because the mean of its divisors is an integer number (373800708038).

Almost surely, 2^{1121402124111} is an apocalyptic number.

1121402124111 is a deficient number, since it is larger than the sum of its proper divisors (373800708041).

1121402124111 is an equidigital number, since it uses as much as digits as its factorization.

1121402124111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373800708040.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 1121402124111 its reverse (1114212041211), we get a palindrome (2235614165322).

The spelling of 1121402124111 in words is "one trillion, one hundred twenty-one billion, four hundred two million, one hundred twenty-four thousand, one hundred eleven".