1213100312210 has 8 divisors (see below), whose sum is σ = 2183580561996. Its totient is φ = 485240124880.

The previous prime is 1213100312197. The next prime is 1213100312239. The reversal of 1213100312210 is 122130013121.

It can be written as a sum of positive squares in 2 ways, for example, as 1211828890561 + 1271421649 = 1100831^2 + 35657^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1213100312210² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60655015601 + ... + 60655015620.

Almost surely, 2^{1213100312210} is an apocalyptic number.

1213100312210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213100312210 is a deficient number, since it is larger than the sum of its proper divisors (970480249786).

1213100312210 is a wasteful number, since it uses less digits than its factorization.

1213100312210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121310031228.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1213100312210 its reverse (122130013121), we get a palindrome (1335230325331).

The spelling of 1213100312210 in words is "one trillion, two hundred thirteen billion, one hundred million, three hundred twelve thousand, two hundred ten".