1213212110 has 32 divisors (see below), whose sum is σ = 2384661600. Its totient is φ = 440732160.

The previous prime is 1213212109. The next prime is 1213212137. The reversal of 1213212110 is 112123121.

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, 119306 + ... + 129074.

It is an arithmetic number, because the mean of its divisors is an integer number (74520675).

Almost surely, 2^1213212110 is an apocalyptic number.

1213212110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213212110 is a deficient number, since it is larger than the sum of its proper divisors (1171449490).

1213212110 is a wasteful number, since it uses less digits than its factorization.

1213212110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10916.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1213212110 is about 34831.1944957390. The cubic root of 1213212110 is about 1066.5443324329.

Adding to 1213212110 its reverse (112123121), we get a palindrome (1325335231).

It can be divided in two parts, 12132 and 12110, that added together give a palindrome (24242).

The spelling of 1213212110 in words is "one billion, two hundred thirteen million, two hundred twelve thousand, one hundred ten".