21220133211006 has 64 divisors (see below), whose sum is σ = 44709118344000. Its totient is φ = 6704614425600.

The previous prime is 21220133210987. The next prime is 21220133211041. The reversal of 21220133211006 is 60011233102212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3611220 + ... + 7448568.

It is an arithmetic number, because the mean of its divisors is an integer number (698579974125).

Almost surely, 2^{21220133211006} is an apocalyptic number.

21220133211006 is an abundant number, since it is smaller than the sum of its proper divisors (23488985132994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21220133211006 is a wasteful number, since it uses less digits than its factorization.

21220133211006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3837965.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 21220133211006 its reverse (60011233102212), we get a palindrome (81231366313218).

The spelling of 21220133211006 in words is "twenty-one trillion, two hundred twenty billion, one hundred thirty-three million, two hundred eleven thousand, six".