1212321010 has 8 divisors (see below), whose sum is σ = 2182177836. Its totient is φ = 484928400.

The previous prime is 1212320987. The next prime is 1212321013. The reversal of 1212321010 is 101232121.

1212321010 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 2 ways, for example, as 1197644449 + 14676561 = 34607^2 + 3831^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (1212321013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60616041 + ... + 60616060.

Almost surely, 2^1212321010 is an apocalyptic number.

1212321010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212321010 is a deficient number, since it is larger than the sum of its proper divisors (969856826).

1212321010 is a wasteful number, since it uses less digits than its factorization.

1212321010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121232108.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1212321010 is about 34818.4004514854. The cubic root of 1212321010 is about 1066.2831441296.

Adding to 1212321010 its reverse (101232121), we get a palindrome (1313553131).

Subtracting from 1212321010 its reverse (101232121), we obtain a square (1111088889 = 33333²).

It can be divided in two parts, 12123 and 21010, that added together give a palindrome (33133).

The spelling of 1212321010 in words is "one billion, two hundred twelve million, three hundred twenty-one thousand, ten".