1231222301220 has 48 divisors (see below), whose sum is σ = 3448400473728. Its totient is φ = 328232801280.

The previous prime is 1231222301167. The next prime is 1231222301273. The reversal of 1231222301220 is 221032221321.

It is an interprime number because it is at equal distance from previous prime (1231222301167) and next prime (1231222301273).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2697421 + ... + 3120660.

It is an arithmetic number, because the mean of its divisors is an integer number (71841676536).

Almost surely, 2^{1231222301220} is an apocalyptic number.

1231222301220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231222301220 is an abundant number, since it is smaller than the sum of its proper divisors (2217178172508).

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

1231222301220 is a wasteful number, since it uses less digits than its factorization.

1231222301220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5821620 (or 5821618 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1231222301220 its reverse (221032221321), we get a palindrome (1452254522541).

The spelling of 1231222301220 in words is "one trillion, two hundred thirty-one billion, two hundred twenty-two million, three hundred one thousand, two hundred twenty".