1331212022220 has 24 divisors (see below), whose sum is σ = 3727393662384. Its totient is φ = 354989872576.

The previous prime is 1331212022191. The next prime is 1331212022233. The reversal of 1331212022220 is 222202121331.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11093433459 + ... + 11093433578.

It is an arithmetic number, because the mean of its divisors is an integer number (155308069266).

Almost surely, 2^{1331212022220} is an apocalyptic number.

1331212022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331212022220 is an abundant number, since it is smaller than the sum of its proper divisors (2396181640164).

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

1331212022220 is a wasteful number, since it uses less digits than its factorization.

1331212022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22186867049 (or 22186867047 counting only the distinct ones).

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

Adding to 1331212022220 its reverse (222202121331), we get a palindrome (1553414143551).

The spelling of 1331212022220 in words is "one trillion, three hundred thirty-one billion, two hundred twelve million, twenty-two thousand, two hundred twenty".