21210002202110 has 8 divisors (see below), whose sum is σ = 38178003963816. Its totient is φ = 8484000880840.

The previous prime is 21210002202079. The next prime is 21210002202119. The reversal of 21210002202110 is 1120220001212.

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

It is a super-2 number, since 2×21210002202110² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21210002202119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1060500110096 + ... + 1060500110115.

It is an arithmetic number, because the mean of its divisors is an integer number (4772250495477).

Almost surely, 2^{21210002202110} is an apocalyptic number.

21210002202110 is a deficient number, since it is larger than the sum of its proper divisors (16968001761706).

21210002202110 is a wasteful number, since it uses less digits than its factorization.

21210002202110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121000220218.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21210002202110 its reverse (1120220001212), we get a palindrome (22330222203322).

The spelling of 21210002202110 in words is "twenty-one trillion, two hundred ten billion, two million, two hundred two thousand, one hundred ten".