12421255350511 has 16 divisors (see below), whose sum is σ = 14817026225664. Its totient is φ = 10181067218784.

The previous prime is 12421255350461. The next prime is 12421255350563. The reversal of 12421255350511 is 11505355212421.

It is not a de Polignac number, because 12421255350511 - 2¹⁹ = 12421254826223 is a prime.

It is a super-2 number, since 2×12421255350511² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12421255350211) 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, 10095121 + ... + 11258506.

It is an arithmetic number, because the mean of its divisors is an integer number (926064139104).

Almost surely, 2^{12421255350511} is an apocalyptic number.

12421255350511 is a deficient number, since it is larger than the sum of its proper divisors (2395770875153).

12421255350511 is a wasteful number, since it uses less digits than its factorization.

12421255350511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21357270.

The product of its (nonzero) digits is 60000, while the sum is 37.

The spelling of 12421255350511 in words is "twelve trillion, four hundred twenty-one billion, two hundred fifty-five million, three hundred fifty thousand, five hundred eleven".