12121022210 has 16 divisors (see below), whose sum is σ = 23801280192. Its totient is φ = 4407644400.

The previous prime is 12121022153. The next prime is 12121022213. The reversal of 12121022210 is 1222012121.

It is not an unprimeable number, because it can be changed into a prime (12121022213) 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, 55095446 + ... + 55095665.

It is an arithmetic number, because the mean of its divisors is an integer number (1487580012).

Almost surely, 2^12121022210 is an apocalyptic number.

12121022210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121022210 is a deficient number, since it is larger than the sum of its proper divisors (11680257982).

12121022210 is a wasteful number, since it uses less digits than its factorization.

12121022210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110191129.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12121022210 its reverse (1222012121), we get a palindrome (13343034331).

The spelling of 12121022210 in words is "twelve billion, one hundred twenty-one million, twenty-two thousand, two hundred ten".