2421606121421 has 16 divisors (see below), whose sum is σ = 2560070520000. Its totient is φ = 2284264136448.

The previous prime is 2421606121399. The next prime is 2421606121423. The reversal of 2421606121421 is 1241216061242.

It is a cyclic number.

It is not a de Polignac number, because 2421606121421 - 2⁶ = 2421606121357 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 (2421606121423) 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, 3810335 + ... + 4400211.

It is an arithmetic number, because the mean of its divisors is an integer number (160004407500).

Almost surely, 2^{2421606121421} is an apocalyptic number.

It is an amenable number.

2421606121421 is a deficient number, since it is larger than the sum of its proper divisors (138464398579).

2421606121421 is a wasteful number, since it uses less digits than its factorization.

2421606121421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590828.

The product of its (nonzero) digits is 9216, while the sum is 32.

The spelling of 2421606121421 in words is "two trillion, four hundred twenty-one billion, six hundred six million, one hundred twenty-one thousand, four hundred twenty-one".