21212002011110 has 64 divisors (see below), whose sum is σ = 39389118048000. Its totient is φ = 8219586278400.

The previous prime is 21212002011089. The next prime is 21212002011127. The reversal of 21212002011110 is 1111020021212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33888380 + ... + 34508640.

It is an arithmetic number, because the mean of its divisors is an integer number (615454969500).

Almost surely, 2^{21212002011110} is an apocalyptic number.

21212002011110 is a deficient number, since it is larger than the sum of its proper divisors (18177116036890).

21212002011110 is a wasteful number, since it uses less digits than its factorization.

21212002011110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620897.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21212002011110 its reverse (1111020021212), we get a palindrome (22323022032322).

The spelling of 21212002011110 in words is "twenty-one trillion, two hundred twelve billion, two million, eleven thousand, one hundred ten".