1231220212307 has 8 divisors (see below), whose sum is σ = 1313909853696. Its totient is φ = 1149671117952.

The previous prime is 1231220212303. The next prime is 1231220212309. The reversal of 1231220212307 is 7032120221321.

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 1231220212307 - 2² = 1231220212303 is a prime.

It is a super-2 number, since 2×1231220212307² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231220212301) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 285134528 + ... + 285138845.

It is an arithmetic number, because the mean of its divisors is an integer number (164238731712).

Almost surely, 2^{1231220212307} is an apocalyptic number.

1231220212307 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1231220212307 is a deficient number, since it is larger than the sum of its proper divisors (82689641389).

1231220212307 is a wasteful number, since it uses less digits than its factorization.

1231220212307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570273517.

The product of its (nonzero) digits is 2016, while the sum is 26.

Adding to 1231220212307 its reverse (7032120221321), we get a palindrome (8263340433628).

The spelling of 1231220212307 in words is "one trillion, two hundred thirty-one billion, two hundred twenty million, two hundred twelve thousand, three hundred seven".