13121101212210 has 48 divisors (see below), whose sum is σ = 34247605870296. Its totient is φ = 3485345685504.

The previous prime is 13121101212209. The next prime is 13121101212221. The reversal of 13121101212210 is 1221210112131.

It is a happy number.

13121101212210 is a `hidden beast` number, since 1 + 31 + 211 + 0 + 1 + 212 + 210 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 11159401243761 + 1961699968449 = 3340569^2 + 1400607^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 283615029 + ... + 283661288.

Almost surely, 2^{13121101212210} is an apocalyptic number.

13121101212210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13121101212210 is an abundant number, since it is smaller than the sum of its proper divisors (21126504658086).

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

13121101212210 is a wasteful number, since it uses less digits than its factorization.

13121101212210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567276587 (or 567276584 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 13121101212210 its reverse (1221210112131), we get a palindrome (14342311324341).

The spelling of 13121101212210 in words is "thirteen trillion, one hundred twenty-one billion, one hundred one million, two hundred twelve thousand, two hundred ten".