12211621615 has 8 divisors (see below), whose sum is σ = 14930435808. Its totient is φ = 9584970720.

The previous prime is 12211621607. The next prime is 12211621621. The reversal of 12211621615 is 51612611221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12211621615 - 2³ = 12211621607 is a prime.

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, 23040531 + ... + 23041060.

It is an arithmetic number, because the mean of its divisors is an integer number (1866304476).

Almost surely, 2^12211621615 is an apocalyptic number.

12211621615 is a deficient number, since it is larger than the sum of its proper divisors (2718814193).

12211621615 is an equidigital number, since it uses as much as digits as its factorization.

12211621615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46081649.

The product of its digits is 1440, while the sum is 28.

The spelling of 12211621615 in words is "twelve billion, two hundred eleven million, six hundred twenty-one thousand, six hundred fifteen".