10321221628 has 24 divisors (see below), whose sum is σ = 19410067152. Its totient is φ = 4784550144.

The previous prime is 10321221593. The next prime is 10321221653. The reversal of 10321221628 is 82612212301.

It is a junction number, because it is equal to n+sod(n) for n = 10321221596 and 10321221605.

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, 1128151 + ... + 1137262.

It is an arithmetic number, because the mean of its divisors is an integer number (808752798).

Almost surely, 2^10321221628 is an apocalyptic number.

It is an amenable number.

10321221628 is a deficient number, since it is larger than the sum of its proper divisors (9088845524).

10321221628 is a wasteful number, since it uses less digits than its factorization.

10321221628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2265501 (or 2265499 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

Adding to 10321221628 its reverse (82612212301), we get a palindrome (92933433929).

The spelling of 10321221628 in words is "ten billion, three hundred twenty-one million, two hundred twenty-one thousand, six hundred twenty-eight".