71222917120 has 288 divisors, whose sum is σ = 186281681040. Its totient is φ = 26114785280.

The previous prime is 71222917091. The next prime is 71222917121. The reversal of 71222917120 is 2171922217.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71222917121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121333467 + ... + 121334053.

Almost surely, 2^71222917120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71222917120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93140840520).

71222917120 is an abundant number, since it is smaller than the sum of its proper divisors (115058763920).

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

71222917120 is a wasteful number, since it uses less digits than its factorization.

71222917120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 34.

The spelling of 71222917120 in words is "seventy-one billion, two hundred twenty-two million, nine hundred seventeen thousand, one hundred twenty".