1213101221301 has 32 divisors (see below), whose sum is σ = 1835591155200. Its totient is φ = 791455392000.

The previous prime is 1213101221263. The next prime is 1213101221309. The reversal of 1213101221301 is 1031221013121.

1213101221301 is a `hidden beast` number, since 1 + 21 + 310 + 12 + 21 + 301 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-1213101221301 is a prime.

It is a super-2 number, since 2×1213101221301² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213101221309) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 16461505 + ... + 16535033.

It is an arithmetic number, because the mean of its divisors is an integer number (57362223600).

Almost surely, 2^{1213101221301} is an apocalyptic number.

It is an amenable number.

1213101221301 is a deficient number, since it is larger than the sum of its proper divisors (622489933899).

1213101221301 is a wasteful number, since it uses less digits than its factorization.

1213101221301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86586 (or 86580 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1213101221301 its reverse (1031221013121), we get a palindrome (2244322234422).

The spelling of 1213101221301 in words is "one trillion, two hundred thirteen billion, one hundred one million, two hundred twenty-one thousand, three hundred one".