12212001212210 has 32 divisors (see below), whose sum is σ = 22145585362992. Its totient is φ = 4848492052480.

The previous prime is 12212001212197. The next prime is 12212001212227. The reversal of 12212001212210 is 1221210021221.

It can be written as a sum of positive squares in 8 ways, for example, as 173648057521 + 12038353154689 = 416711^2 + 3469633^2 .

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, 7528271 + ... + 9005490.

Almost surely, 2^{12212001212210} is an apocalyptic number.

12212001212210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12212001212210 is a deficient number, since it is larger than the sum of its proper divisors (9933584150782).

12212001212210 is a wasteful number, since it uses less digits than its factorization.

12212001212210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16534318.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12212001212210 its reverse (1221210021221), we get a palindrome (13433211233431).

The spelling of 12212001212210 in words is "twelve trillion, two hundred twelve billion, one million, two hundred twelve thousand, two hundred ten".