21214421301 has 16 divisors (see below), whose sum is σ = 30205186560. Its totient is φ = 13214765760.

The previous prime is 21214421279. The next prime is 21214421309. The reversal of 21214421301 is 10312441212.

It is not a de Polignac number, because 21214421301 - 2⁶ = 21214421237 is a prime.

It is a super-2 number, since 2×21214421301² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21214421309) 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, 3930270 + ... + 3935663.

It is an arithmetic number, because the mean of its divisors is an integer number (1887824160).

Almost surely, 2^21214421301 is an apocalyptic number.

It is an amenable number.

21214421301 is a deficient number, since it is larger than the sum of its proper divisors (8990765259).

21214421301 is a wasteful number, since it uses less digits than its factorization.

21214421301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7865996.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 21214421301 its reverse (10312441212), we get a palindrome (31526862513).

The spelling of 21214421301 in words is "twenty-one billion, two hundred fourteen million, four hundred twenty-one thousand, three hundred one".