212100021110 has 16 divisors (see below), whose sum is σ = 404237687616. Its totient is φ = 79849419648.

The previous prime is 212100021097. The next prime is 212100021137. The reversal of 212100021110 is 11120001212.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212100021091 and 212100021100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 623823422 + ... + 623823761.

It is an arithmetic number, because the mean of its divisors is an integer number (25264855476).

Almost surely, 2^212100021110 is an apocalyptic number.

212100021110 is a deficient number, since it is larger than the sum of its proper divisors (192137666506).

212100021110 is a wasteful number, since it uses less digits than its factorization.

212100021110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247647207.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 212100021110 its reverse (11120001212), we get a palindrome (223220022322).

The spelling of 212100021110 in words is "two hundred twelve billion, one hundred million, twenty-one thousand, one hundred ten".