12121022212210 has 32 divisors (see below), whose sum is σ = 21893701040640. Its totient is φ = 4831560706752.

The previous prime is 12121022212207. The next prime is 12121022212283. The reversal of 12121022212210 is 1221222012121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9274267 + ... + 10500193.

It is an arithmetic number, because the mean of its divisors is an integer number (684178157520).

Almost surely, 2^{12121022212210} is an apocalyptic number.

12121022212210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121022212210 is a deficient number, since it is larger than the sum of its proper divisors (9772678828430).

12121022212210 is a wasteful number, since it uses less digits than its factorization.

12121022212210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229370.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12121022212210 its reverse (1221222012121), we get a palindrome (13342244224331).

The spelling of 12121022212210 in words is "twelve trillion, one hundred twenty-one billion, twenty-two million, two hundred twelve thousand, two hundred ten".