10651063621221 has 16 divisors (see below), whose sum is σ = 15793816758720. Its totient is φ = 7094200620240.

The previous prime is 10651063621189. The next prime is 10651063621223. The reversal of 10651063621221 is 12212636015601.

10651063621221 is a `hidden beast` number, since 1 + 0 + 6 + 5 + 1 + 0 + 6 + 3 + 621 + 2 + 21 = 666.

It is not a de Polignac number, because 10651063621221 - 2⁵ = 10651063621189 is a prime.

It is a super-2 number, since 2×10651063621221² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10651063621223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180760570 + ... + 180819483.

It is an arithmetic number, because the mean of its divisors is an integer number (987113547420).

Almost surely, 2^{10651063621221} is an apocalyptic number.

It is an amenable number.

10651063621221 is a deficient number, since it is larger than the sum of its proper divisors (5142753137499).

10651063621221 is a wasteful number, since it uses less digits than its factorization.

10651063621221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361581153 (or 361581147 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

Adding to 10651063621221 its reverse (12212636015601), we get a palindrome (22863699636822).

The spelling of 10651063621221 in words is "ten trillion, six hundred fifty-one billion, sixty-three million, six hundred twenty-one thousand, two hundred twenty-one".