1221310201302 has 24 divisors (see below), whose sum is σ = 2646567256320. Its totient is φ = 407042607600.

The previous prime is 1221310201271. The next prime is 1221310201357. The reversal of 1221310201302 is 2031020131221.

1221310201302 is a `hidden beast` number, since 1 + 221 + 310 + 2 + 0 + 130 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 4942102 + ... + 5183337.

It is an arithmetic number, because the mean of its divisors is an integer number (110273635680).

Almost surely, 2^{1221310201302} is an apocalyptic number.

1221310201302 is an abundant number, since it is smaller than the sum of its proper divisors (1425257055018).

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

1221310201302 is a wasteful number, since it uses less digits than its factorization.

1221310201302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10132148 (or 10132145 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1221310201302 its reverse (2031020131221), we get a palindrome (3252330332523).

The spelling of 1221310201302 in words is "one trillion, two hundred twenty-one billion, three hundred ten million, two hundred one thousand, three hundred two".