212111310 has 16 divisors (see below), whose sum is σ = 509067216. Its totient is φ = 56563008.

The previous prime is 212111309. The next prime is 212111323. The reversal of 212111310 is 13111212.

It is a super-2 number, since 2×212111310² = 89982415659832200, which contains 22 as substring.

It is a Curzon number.

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, 3535159 + ... + 3535218.

It is an arithmetic number, because the mean of its divisors is an integer number (31816701).

Almost surely, 2^212111310 is an apocalyptic number.

212111310 is an abundant number, since it is smaller than the sum of its proper divisors (296955906).

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

212111310 is a wasteful number, since it uses less digits than its factorization.

212111310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7070387.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 212111310 is about 14564.0416780508. The cubic root of 212111310 is about 596.3775347002.

Adding to 212111310 its reverse (13111212), we get a palindrome (225222522).

It can be divided in two parts, 2121 and 11310, that added together give a palindrome (13431).

The spelling of 212111310 in words is "two hundred twelve million, one hundred eleven thousand, three hundred ten".