21623522201122 has 8 divisors (see below), whose sum is σ = 32531530434156. Its totient is φ = 10779678723072.

The previous prime is 21623522201087. The next prime is 21623522201159. The reversal of 21623522201122 is 22110222532612.

It can be written as a sum of positive squares in 2 ways, for example, as 20952123867801 + 671398333321 = 4577349^2 + 819389^2 .

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, 16041187903 + ... + 16041189250.

Almost surely, 2^{21623522201122} is an apocalyptic number.

21623522201122 is a deficient number, since it is larger than the sum of its proper divisors (10908008233034).

21623522201122 is a wasteful number, since it uses less digits than its factorization.

21623522201122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32082377492.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 21623522201122 its reverse (22110222532612), we get a palindrome (43733744733734).

The spelling of 21623522201122 in words is "twenty-one trillion, six hundred twenty-three billion, five hundred twenty-two million, two hundred one thousand, one hundred twenty-two".