71300212421 has 4 divisors (see below), whose sum is σ = 75052855200. Its totient is φ = 67547569644.

The previous prime is 71300212393. The next prime is 71300212433. The reversal of 71300212421 is 12421200317.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12421200317 = 73 ⋅170153429.

It is a cyclic number.

It is not a de Polignac number, because 71300212421 - 2¹⁸ = 71299950277 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 (71300212481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1876321361 + ... + 1876321398.

It is an arithmetic number, because the mean of its divisors is an integer number (18763213800).

Almost surely, 2^71300212421 is an apocalyptic number.

It is an amenable number.

71300212421 is a deficient number, since it is larger than the sum of its proper divisors (3752642779).

71300212421 is a wasteful number, since it uses less digits than its factorization.

71300212421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3752642778.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 71300212421 its reverse (12421200317), we get a palindrome (83721412738).

The spelling of 71300212421 in words is "seventy-one billion, three hundred million, two hundred twelve thousand, four hundred twenty-one".