1213122213031 has 8 divisors (see below), whose sum is σ = 1223936391600. Its totient is φ = 1202343667008.

The previous prime is 1213122212959. The next prime is 1213122213041. The reversal of 1213122213031 is 1303122213121.

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

It is a cyclic number.

It is not a de Polignac number, because 1213122213031 - 2²⁵ = 1213088658599 is a prime.

It is a super-2 number, since 2×1213122213031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1213122212993 and 1213122213011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213122213041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8839741 + ... + 8975926.

It is an arithmetic number, because the mean of its divisors is an integer number (152992048950).

Almost surely, 2^{1213122213031} is an apocalyptic number.

1213122213031 is a deficient number, since it is larger than the sum of its proper divisors (10814178569).

1213122213031 is a wasteful number, since it uses less digits than its factorization.

1213122213031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17816273.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1213122213031 its reverse (1303122213121), we get a palindrome (2516244426152).

The spelling of 1213122213031 in words is "one trillion, two hundred thirteen billion, one hundred twenty-two million, two hundred thirteen thousand, thirty-one".