42011221511 has 8 divisors (see below), whose sum is σ = 48478969344. Its totient is φ = 35660009880.

The previous prime is 42011221501. The next prime is 42011221513. The reversal of 42011221511 is 11512211024.

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 42011221511 - 2²⁶ = 41944112647 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 (42011221513) 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, 29133275 + ... + 29134716.

It is an arithmetic number, because the mean of its divisors is an integer number (6059871168).

Almost surely, 2^42011221511 is an apocalyptic number.

42011221511 is a deficient number, since it is larger than the sum of its proper divisors (6467747833).

42011221511 is a wasteful number, since it uses less digits than its factorization.

42011221511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58268101.

The product of its (nonzero) digits is 160, while the sum is 20.

Adding to 42011221511 its reverse (11512211024), we get a palindrome (53523432535).

The spelling of 42011221511 in words is "forty-two billion, eleven million, two hundred twenty-one thousand, five hundred eleven".