10221101999965 has 8 divisors (see below), whose sum is σ = 12271445887968. Its totient is φ = 8172799274640.

The previous prime is 10221101999951. The next prime is 10221102000077. The reversal of 10221101999965 is 56999910112201.

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 10221101999965 - 2²¹ = 10221099902813 is a prime.

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, 510279651 + ... + 510299680.

It is an arithmetic number, because the mean of its divisors is an integer number (1533930735996).

Almost surely, 2^{10221101999965} is an apocalyptic number.

It is an amenable number.

10221101999965 is a deficient number, since it is larger than the sum of its proper divisors (2050343888003).

10221101999965 is a wasteful number, since it uses less digits than its factorization.

10221101999965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020581339.

The product of its (nonzero) digits is 787320, while the sum is 55.

The spelling of 10221101999965 in words is "ten trillion, two hundred twenty-one billion, one hundred one million, nine hundred ninety-nine thousand, nine hundred sixty-five".