12351621010 has 16 divisors (see below), whose sum is σ = 22239190872. Its totient is φ = 4939254400.

The previous prime is 12351621001. The next prime is 12351621011. The reversal of 12351621010 is 1012615321.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8753660721 + 3597960289 = 93561^2 + 59983^2 .

It is not an unprimeable number, because it can be changed into a prime (12351621011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136651 + ... + 208270.

Almost surely, 2^12351621010 is an apocalyptic number.

12351621010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12351621010 is a deficient number, since it is larger than the sum of its proper divisors (9887569862).

12351621010 is a wasteful number, since it uses less digits than its factorization.

12351621010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348509.

The product of its (nonzero) digits is 360, while the sum is 22.

The spelling of 12351621010 in words is "twelve billion, three hundred fifty-one million, six hundred twenty-one thousand, ten".