12211621624 has 64 divisors (see below), whose sum is σ = 23553649440. Its totient is φ = 5933813760.

The previous prime is 12211621621. The next prime is 12211621691. The reversal of 12211621624 is 42612611221.

It is a junction number, because it is equal to n+sod(n) for n = 12211621592 and 12211621601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211621621) 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, 13923874 + ... + 13924750.

Almost surely, 2^12211621624 is an apocalyptic number.

It is an amenable number.

12211621624 is a deficient number, since it is larger than the sum of its proper divisors (11342027816).

12211621624 is a wasteful number, since it uses less digits than its factorization.

12211621624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280 (or 1276 counting only the distinct ones).

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

The spelling of 12211621624 in words is "twelve billion, two hundred eleven million, six hundred twenty-one thousand, six hundred twenty-four".