10621217153212 has 6 divisors (see below), whose sum is σ = 18587130018128. Its totient is φ = 5310608576604.

The previous prime is 10621217153191. The next prime is 10621217153213. The reversal of 10621217153212 is 21235171212601.

It is a super-2 number, since 2×10621217153212² (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 (10621217153213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1327652144148 + ... + 1327652144155.

Almost surely, 2^{10621217153212} is an apocalyptic number.

It is an amenable number.

10621217153212 is a deficient number, since it is larger than the sum of its proper divisors (7965912864916).

10621217153212 is a wasteful number, since it uses less digits than its factorization.

10621217153212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2655304288307 (or 2655304288305 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

Adding to 10621217153212 its reverse (21235171212601), we get a palindrome (31856388365813).

The spelling of 10621217153212 in words is "ten trillion, six hundred twenty-one billion, two hundred seventeen million, one hundred fifty-three thousand, two hundred twelve".