1212113210 has 32 divisors (see below), whose sum is σ = 2720172672. Its totient is φ = 377801280.

The previous prime is 1212113191. The next prime is 1212113213. The reversal of 1212113210 is 123112121.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (1212113213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 786317 + ... + 787856.

It is an arithmetic number, because the mean of its divisors is an integer number (85005396).

Almost surely, 2^1212113210 is an apocalyptic number.

1212113210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212113210 is an abundant number, since it is smaller than the sum of its proper divisors (1508059462).

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

1212113210 is a wasteful number, since it uses less digits than its factorization.

1212113210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574198.

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

The square root of 1212113210 is about 34815.4162692334. The cubic root of 1212113210 is about 1066.2222179403. Note that the first 4 decimals are identical.

Adding to 1212113210 its reverse (123112121), we get a palindrome (1335225331).

It can be divided in two parts, 121211 and 3210, that added together give a palindrome (124421).

The spelling of 1212113210 in words is "one billion, two hundred twelve million, one hundred thirteen thousand, two hundred ten".