21201122201102 has 8 divisors (see below), whose sum is σ = 32541257332056. Its totient is φ = 10354036423752.

The previous prime is 21201122201099. The next prime is 21201122201113. The reversal of 21201122201102 is 20110222110212.

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

It is a super-2 number, since 2×21201122201102² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 123262338293 + ... + 123262338464.

It is an arithmetic number, because the mean of its divisors is an integer number (4067657166507).

Almost surely, 2^{21201122201102} is an apocalyptic number.

21201122201102 is a deficient number, since it is larger than the sum of its proper divisors (11340135130954).

21201122201102 is a wasteful number, since it uses less digits than its factorization.

21201122201102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246524676802.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21201122201102 its reverse (20110222110212), we get a palindrome (41311344311314).

The spelling of 21201122201102 in words is "twenty-one trillion, two hundred one billion, one hundred twenty-two million, two hundred one thousand, one hundred two".