1123424021021 has 8 divisors (see below), whose sum is σ = 1126845941760. Its totient is φ = 1120004646352.

The previous prime is 1123424020981. The next prime is 1123424021053. The reversal of 1123424021021 is 1201204243211.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123424021021 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 (1123424027021) 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, 249176 + ... + 1519518.

It is an arithmetic number, because the mean of its divisors is an integer number (140855742720).

Almost surely, 2^{1123424021021} is an apocalyptic number.

It is an amenable number.

1123424021021 is a deficient number, since it is larger than the sum of its proper divisors (3421920739).

1123424021021 is a wasteful number, since it uses less digits than its factorization.

1123424021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273035.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 1123424021021 its reverse (1201204243211), we get a palindrome (2324628264232).

The spelling of 1123424021021 in words is "one trillion, one hundred twenty-three billion, four hundred twenty-four million, twenty-one thousand, twenty-one".