121442104213 has 8 divisors (see below), whose sum is σ = 129329030808. Its totient is φ = 113637763584.

The previous prime is 121442104193. The next prime is 121442104241. The reversal of 121442104213 is 312401244121.

It can be written as a sum of positive squares in 4 ways, for example, as 29021848164 + 92420256049 = 170358^2 + 304007^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 121442104213 - 2¹⁷ = 121441973141 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 (121442104253) 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, 20643456 + ... + 20649337.

It is an arithmetic number, because the mean of its divisors is an integer number (16166128851).

Almost surely, 2^121442104213 is an apocalyptic number.

It is an amenable number.

121442104213 is a deficient number, since it is larger than the sum of its proper divisors (7886926595).

121442104213 is a wasteful number, since it uses less digits than its factorization.

121442104213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41292983.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 121442104213 its reverse (312401244121), we get a palindrome (433843348334).

The spelling of 121442104213 in words is "one hundred twenty-one billion, four hundred forty-two million, one hundred four thousand, two hundred thirteen".