21421441301 has 32 divisors (see below), whose sum is σ = 25161642240. Its totient is φ = 18064456704.

The previous prime is 21421441291. The next prime is 21421441333. The reversal of 21421441301 is 10314412412.

It is a cyclic number.

It is not a de Polignac number, because 21421441301 - 2²² = 21417246997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21421441351) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1022336 + ... + 1043078.

It is an arithmetic number, because the mean of its divisors is an integer number (786301320).

Almost surely, 2^21421441301 is an apocalyptic number.

It is an amenable number.

21421441301 is a deficient number, since it is larger than the sum of its proper divisors (3740200939).

21421441301 is a wasteful number, since it uses less digits than its factorization.

21421441301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20925.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 21421441301 its reverse (10314412412), we get a palindrome (31735853713).

The spelling of 21421441301 in words is "twenty-one billion, four hundred twenty-one million, four hundred forty-one thousand, three hundred one".