11620421421 has 16 divisors (see below), whose sum is σ = 17709969024. Its totient is φ = 6639243264.

The previous prime is 11620421401. The next prime is 11620421431. The reversal of 11620421421 is 12412402611.

11620421421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11620421421 - 2¹⁷ = 11620290349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11620421391 and 11620421400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11620421401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115321 + ... + 191153.

It is an arithmetic number, because the mean of its divisors is an integer number (1106873064).

Almost surely, 2^11620421421 is an apocalyptic number.

It is an amenable number.

11620421421 is a deficient number, since it is larger than the sum of its proper divisors (6089547603).

11620421421 is an equidigital number, since it uses as much as digits as its factorization.

11620421421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83140.

The product of its (nonzero) digits is 768, while the sum is 24.

The spelling of 11620421421 in words is "eleven billion, six hundred twenty million, four hundred twenty-one thousand, four hundred twenty-one".