212121011210110 has 16 divisors (see below), whose sum is σ = 382139486433936. Its totient is φ = 84776923093888.

The previous prime is 212121011210099. The next prime is 212121011210117. The reversal of 212121011210110 is 11012110121212.

212121011210110 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×212121011210110³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212121011210117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8935161307 + ... + 8935185046.

It is an arithmetic number, because the mean of its divisors is an integer number (23883717902121).

Almost surely, 2^{212121011210110} is an apocalyptic number.

212121011210110 is a deficient number, since it is larger than the sum of its proper divisors (170018475223826).

212121011210110 is a wasteful number, since it uses less digits than its factorization.

212121011210110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17870347547.

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

Adding to 212121011210110 its reverse (11012110121212), we get a palindrome (223133121331322).

The spelling of 212121011210110 in words is "two hundred twelve trillion, one hundred twenty-one billion, eleven million, two hundred ten thousand, one hundred ten".