1301033311221 has 48 divisors (see below), whose sum is σ = 2088273523200. Its totient is φ = 717652172160.

The previous prime is 1301033311153. The next prime is 1301033311223. The reversal of 1301033311221 is 1221133301031.

It is a happy number.

It is not a de Polignac number, because 1301033311221 - 2¹³ = 1301033303029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301033311223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1449555 + ... + 2168703.

It is an arithmetic number, because the mean of its divisors is an integer number (43505698400).

Almost surely, 2^{1301033311221} is an apocalyptic number.

It is an amenable number.

1301033311221 is a deficient number, since it is larger than the sum of its proper divisors (787240211979).

1301033311221 is a wasteful number, since it uses less digits than its factorization.

1301033311221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719594 (or 719587 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1301033311221 its reverse (1221133301031), we get a palindrome (2522166612252).

The spelling of 1301033311221 in words is "one trillion, three hundred one billion, thirty-three million, three hundred eleven thousand, two hundred twenty-one".