10216850721 has 96 divisors (see below), whose sum is σ = 17673513984. Its totient is φ = 5099481600.

The previous prime is 10216850717. The next prime is 10216850759. The reversal of 10216850721 is 12705861201.

It is not a de Polignac number, because 10216850721 - 2² = 10216850717 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (10216854721) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 32229655 + ... + 32229971.

It is an arithmetic number, because the mean of its divisors is an integer number (184099104).

Almost surely, 2^10216850721 is an apocalyptic number.

10216850721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10216850721 is a deficient number, since it is larger than the sum of its proper divisors (7456663263).

10216850721 is a wasteful number, since it uses less digits than its factorization.

10216850721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503 (or 462 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 33.

The spelling of 10216850721 in words is "ten billion, two hundred sixteen million, eight hundred fifty thousand, seven hundred twenty-one".