42212205123 has 16 divisors (see below), whose sum is σ = 61465143936. Its totient is φ = 25555832640.

The previous prime is 42212205121. The next prime is 42212205157. The reversal of 42212205123 is 32150221224.

It is not a de Polignac number, because 42212205123 - 2¹ = 42212205121 is a prime.

It is a super-2 number, since 2×42212205123² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42212205093 and 42212205102.

It is not an unprimeable number, because it can be changed into a prime (42212205121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 651661 + ... + 713502.

It is an arithmetic number, because the mean of its divisors is an integer number (3841571496).

Almost surely, 2^42212205123 is an apocalyptic number.

42212205123 is a deficient number, since it is larger than the sum of its proper divisors (19252938813).

42212205123 is a wasteful number, since it uses less digits than its factorization.

42212205123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366114.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 42212205123 its reverse (32150221224), we get a palindrome (74362426347).

The spelling of 42212205123 in words is "forty-two billion, two hundred twelve million, two hundred five thousand, one hundred twenty-three".