121033442013 has 32 divisors (see below), whose sum is σ = 176656619520. Its totient is φ = 73100564160.

The previous prime is 121033442009. The next prime is 121033442017. The reversal of 121033442013 is 310244330121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121033442009) and next prime (121033442017).

It is not a de Polignac number, because 121033442013 - 2² = 121033442009 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121033442017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26499456 + ... + 26504022.

It is an arithmetic number, because the mean of its divisors is an integer number (5520519360).

Almost surely, 2^121033442013 is an apocalyptic number.

It is an amenable number.

121033442013 is a deficient number, since it is larger than the sum of its proper divisors (55623177507).

121033442013 is a wasteful number, since it uses less digits than its factorization.

121033442013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7177.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 121033442013 its reverse (310244330121), we get a palindrome (431277772134).

The spelling of 121033442013 in words is "one hundred twenty-one billion, thirty-three million, four hundred forty-two thousand, thirteen".