42121331212205 has 8 divisors (see below), whose sum is σ = 57766397091072. Its totient is φ = 28883198545488.

The previous prime is 42121331212193. The next prime is 42121331212229. The reversal of 42121331212205 is 50221213312124.

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

It is not a de Polignac number, because 42121331212205 - 2¹⁶ = 42121331146669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 601733302997 + ... + 601733303066.

It is an arithmetic number, because the mean of its divisors is an integer number (7220799636384).

Almost surely, 2^{42121331212205} is an apocalyptic number.

It is an amenable number.

42121331212205 is a deficient number, since it is larger than the sum of its proper divisors (15645065878867).

42121331212205 is a wasteful number, since it uses less digits than its factorization.

42121331212205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203466606075.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 42121331212205 its reverse (50221213312124), we get a palindrome (92342544524329).

The spelling of 42121331212205 in words is "forty-two trillion, one hundred twenty-one billion, three hundred thirty-one million, two hundred twelve thousand, two hundred five".