71212421152 has 24 divisors (see below), whose sum is σ = 146295084096. Its totient is φ = 34058114112.

The previous prime is 71212421101. The next prime is 71212421153. The reversal of 71212421152 is 25112421217.

It is a self number, because there is not a number n which added to its sum of digits gives 71212421152.

It is not an unprimeable number, because it can be changed into a prime (71212421153) 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, 48377268 + ... + 48378739.

It is an arithmetic number, because the mean of its divisors is an integer number (6095628504).

Almost surely, 2^71212421152 is an apocalyptic number.

It is an amenable number.

71212421152 is an abundant number, since it is smaller than the sum of its proper divisors (75082662944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71212421152 is a wasteful number, since it uses less digits than its factorization.

71212421152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96756040 (or 96756032 counting only the distinct ones).

The product of its digits is 2240, while the sum is 28.

Adding to 71212421152 its reverse (25112421217), we get a palindrome (96324842369).

The spelling of 71212421152 in words is "seventy-one billion, two hundred twelve million, four hundred twenty-one thousand, one hundred fifty-two".