10721052221765 has 8 divisors (see below), whose sum is σ = 13164454821408. Its totient is φ = 8377380340560.

The previous prime is 10721052221731. The next prime is 10721052221783. The reversal of 10721052221765 is 56712225012701.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10721052221765 - 2⁶ = 10721052221701 is a prime.

It is a super-2 number, since 2×10721052221765² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

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, 24932679371 + ... + 24932679800.

It is an arithmetic number, because the mean of its divisors is an integer number (1645556852676).

Almost surely, 2^{10721052221765} is an apocalyptic number.

It is an amenable number.

10721052221765 is a deficient number, since it is larger than the sum of its proper divisors (2443402599643).

10721052221765 is an equidigital number, since it uses as much as digits as its factorization.

10721052221765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49865359219.

The product of its (nonzero) digits is 117600, while the sum is 41.

The spelling of 10721052221765 in words is "ten trillion, seven hundred twenty-one billion, fifty-two million, two hundred twenty-one thousand, seven hundred sixty-five".