21201102001102 has 8 divisors (see below), whose sum is σ = 31801676244336. Its totient is φ = 10600543252992.

The previous prime is 21201102001049. The next prime is 21201102001133. The reversal of 21201102001102 is 20110020110212.

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

It is a super-2 number, since 2×21201102001102² (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, 563278 + ... + 6536014.

It is an arithmetic number, because the mean of its divisors is an integer number (3975209530542).

Almost surely, 2^{21201102001102} is an apocalyptic number.

21201102001102 is a deficient number, since it is larger than the sum of its proper divisors (10600574243234).

21201102001102 is a wasteful number, since it uses less digits than its factorization.

21201102001102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7747562.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21201102001102 its reverse (20110020110212), we get a palindrome (41311122111314).

The spelling of 21201102001102 in words is "twenty-one trillion, two hundred one billion, one hundred two million, one thousand, one hundred two".