221212020002110 has 128 divisors (see below), whose sum is σ = 428712393392640. Its totient is φ = 81880603521024.

The previous prime is 221212020002027. The next prime is 221212020002143. The reversal of 221212020002110 is 11200020212122.

It is a happy number.

It is a super-3 number, since 3×221212020002110³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13666021437 + ... + 13666037623.

It is an arithmetic number, because the mean of its divisors is an integer number (3349315573380).

Almost surely, 2^{221212020002110} is an apocalyptic number.

221212020002110 is a deficient number, since it is larger than the sum of its proper divisors (207500373390530).

221212020002110 is a wasteful number, since it uses less digits than its factorization.

221212020002110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18490.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221212020002110 its reverse (11200020212122), we get a palindrome (232412040214232).

The spelling of 221212020002110 in words is "two hundred twenty-one trillion, two hundred twelve billion, twenty million, two thousand, one hundred ten".