42121013219 has 2 divisors, whose sum is σ = 42121013220. Its totient is φ = 42121013218.

The previous prime is 42121013173. The next prime is 42121013243. The reversal of 42121013219 is 91231012124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42121013219 - 2¹⁶ = 42120947683 is a prime.

It is a super-2 number, since 2×42121013219² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42121013299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21060506609 + 21060506610.

It is an arithmetic number, because the mean of its divisors is an integer number (21060506610).

Almost surely, 2^42121013219 is an apocalyptic number.

42121013219 is a deficient number, since it is larger than the sum of its proper divisors (1).

42121013219 is an equidigital number, since it uses as much as digits as its factorization.

42121013219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 42121013219 in words is "forty-two billion, one hundred twenty-one million, thirteen thousand, two hundred nineteen".