21155236246106 has 8 divisors (see below), whose sum is σ = 32206479061440. Its totient is φ = 10419743225628.

The previous prime is 21155236246097. The next prime is 21155236246223. The reversal of 21155236246106 is 60164263255112.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78937448546 + ... + 78937448813.

It is an arithmetic number, because the mean of its divisors is an integer number (4025809882680).

Almost surely, 2^{21155236246106} is an apocalyptic number.

21155236246106 is a deficient number, since it is larger than the sum of its proper divisors (11051242815334).

21155236246106 is a wasteful number, since it uses less digits than its factorization.

21155236246106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157874897428.

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 21155236246106 in words is "twenty-one trillion, one hundred fifty-five billion, two hundred thirty-six million, two hundred forty-six thousand, one hundred six".