1213100131222 has 8 divisors (see below), whose sum is σ = 2079600224976. Its totient is φ = 519900056232.

The previous prime is 1213100131141. The next prime is 1213100131249. The reversal of 1213100131222 is 2221310013121.

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

It is a super-2 number, since 2×1213100131222² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1213100131222.

It is a congruent number.

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, 43325004673 + ... + 43325004700.

It is an arithmetic number, because the mean of its divisors is an integer number (259950028122).

Almost surely, 2^{1213100131222} is an apocalyptic number.

1213100131222 is a deficient number, since it is larger than the sum of its proper divisors (866500093754).

1213100131222 is an equidigital number, since it uses as much as digits as its factorization.

1213100131222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86650009382.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1213100131222 its reverse (2221310013121), we get a palindrome (3434410144343).

The spelling of 1213100131222 in words is "one trillion, two hundred thirteen billion, one hundred million, one hundred thirty-one thousand, two hundred twenty-two".