12121202210 has 96 divisors (see below), whose sum is σ = 24675354000. Its totient is φ = 4279661568.

The previous prime is 12121202201. The next prime is 12121202279. The reversal of 12121202210 is 1220212121.

It can be written as a sum of positive squares in 24 ways, for example, as 4284880681 + 7836321529 = 65459^2 + 88523^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5340956 + ... + 5343224.

Almost surely, 2^12121202210 is an apocalyptic number.

12121202210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121202210 is an abundant number, since it is smaller than the sum of its proper divisors (12554151790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12121202210 is a wasteful number, since it uses less digits than its factorization.

12121202210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440 (or 2427 counting only the distinct ones).

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

Adding to 12121202210 its reverse (1220212121), we get a palindrome (13341414331).

The spelling of 12121202210 in words is "twelve billion, one hundred twenty-one million, two hundred two thousand, two hundred ten".