212121220001110 has 32 divisors (see below), whose sum is σ = 447006668496192. Its totient is φ = 70953439441920.

The previous prime is 212121220001101. The next prime is 212121220001191. The reversal of 212121220001110 is 11100022121212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36954913507 + ... + 36954919246.

It is an arithmetic number, because the mean of its divisors is an integer number (13968958390506).

Almost surely, 2^{212121220001110} is an apocalyptic number.

212121220001110 is an abundant number, since it is smaller than the sum of its proper divisors (234885448495082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212121220001110 is a wasteful number, since it uses less digits than its factorization.

212121220001110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73909832808.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212121220001110 its reverse (11100022121212), we get a palindrome (223221242122322).

The spelling of 212121220001110 in words is "two hundred twelve trillion, one hundred twenty-one billion, two hundred twenty million, one thousand, one hundred ten".