71221101200 has 60 divisors (see below), whose sum is σ = 171150379008. Its totient is φ = 28481500800.

The previous prime is 71221101181. The next prime is 71221101221. The reversal of 71221101200 is 210112217.

It is a super-2 number, since 2×71221101200² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1817009 + ... + 1855791.

Almost surely, 2^71221101200 is an apocalyptic number.

It is an amenable number.

71221101200 is an abundant number, since it is smaller than the sum of its proper divisors (99929277808).

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

71221101200 is a wasteful number, since it uses less digits than its factorization.

71221101200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43392 (or 43381 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 17.

Adding to 71221101200 its reverse (210112217), we get a palindrome (71431213417).

The spelling of 71221101200 in words is "seventy-one billion, two hundred twenty-one million, one hundred one thousand, two hundred".