12121210221010 has 32 divisors (see below), whose sum is σ = 23801959076544. Its totient is φ = 4407655416000.

The previous prime is 12121210221007. The next prime is 12121210221017. The reversal of 12121210221010 is 1012201212121.

It is not an unprimeable number, because it can be changed into a prime (12121210221017) 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, 8279625 + ... + 9632995.

It is an arithmetic number, because the mean of its divisors is an integer number (743811221142).

Almost surely, 2^{12121210221010} is an apocalyptic number.

12121210221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121210221010 is a deficient number, since it is larger than the sum of its proper divisors (11680748855534).

12121210221010 is a wasteful number, since it uses less digits than its factorization.

12121210221010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1434810.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12121210221010 its reverse (1012201212121), we get a palindrome (13133411433131).

The spelling of 12121210221010 in words is "twelve trillion, one hundred twenty-one billion, two hundred ten million, two hundred twenty-one thousand, ten".