65221533112 has 32 divisors (see below), whose sum is σ = 122979300480. Its totient is φ = 32427329760.

The previous prime is 65221533103. The next prime is 65221533131. The reversal of 65221533112 is 21133512256.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1946533 + ... + 1979755.

It is an arithmetic number, because the mean of its divisors is an integer number (3843103140).

Almost surely, 2^65221533112 is an apocalyptic number.

It is an amenable number.

65221533112 is a deficient number, since it is larger than the sum of its proper divisors (57757767368).

65221533112 is a wasteful number, since it uses less digits than its factorization.

65221533112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34603 (or 34599 counting only the distinct ones).

The product of its digits is 10800, while the sum is 31.

The spelling of 65221533112 in words is "sixty-five billion, two hundred twenty-one million, five hundred thirty-three thousand, one hundred twelve".