21421031341 has 16 divisors (see below), whose sum is σ = 22875586560. Its totient is φ = 20022387840.

The previous prime is 21421031329. The next prime is 21421031353. The reversal of 21421031341 is 14313012412.

It is an interprime number because it is at equal distance from previous prime (21421031329) and next prime (21421031353).

It is a cyclic number.

It is not a de Polignac number, because 21421031341 - 2⁵ = 21421031309 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 (21421031371) 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, 88980 + ... + 225298.

It is an arithmetic number, because the mean of its divisors is an integer number (1429724160).

Almost surely, 2^21421031341 is an apocalyptic number.

It is an amenable number.

21421031341 is a deficient number, since it is larger than the sum of its proper divisors (1454555219).

21421031341 is a wasteful number, since it uses less digits than its factorization.

21421031341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136524.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21421031341 its reverse (14313012412), we get a palindrome (35734043753).

The spelling of 21421031341 in words is "twenty-one billion, four hundred twenty-one million, thirty-one thousand, three hundred forty-one".