10213221556 has 12 divisors (see below), whose sum is σ = 17889587968. Its totient is φ = 5101910712.

The previous prime is 10213221547. The next prime is 10213221587. The reversal of 10213221556 is 65512231201.

It is a super-2 number, since 2×10213221556² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1170126 + ... + 1178821.

Almost surely, 2^10213221556 is an apocalyptic number.

It is an amenable number.

10213221556 is a deficient number, since it is larger than the sum of its proper divisors (7676366412).

10213221556 is a wasteful number, since it uses less digits than its factorization.

10213221556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2350038 (or 2350036 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 10213221556 its reverse (65512231201), we get a palindrome (75725452757).

The spelling of 10213221556 in words is "ten billion, two hundred thirteen million, two hundred twenty-one thousand, five hundred fifty-six".