1301121012221 has 8 divisors (see below), whose sum is σ = 1307202096384. Its totient is φ = 1295052881760.

The previous prime is 1301121012137. The next prime is 1301121012259. The reversal of 1301121012221 is 1222101211031.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1301121012221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1301121012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301121012281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3037040 + ... + 3438873.

It is an arithmetic number, because the mean of its divisors is an integer number (163400262048).

Almost surely, 2^{1301121012221} is an apocalyptic number.

It is an amenable number.

1301121012221 is a deficient number, since it is larger than the sum of its proper divisors (6081084163).

1301121012221 is an equidigital number, since it uses as much as digits as its factorization.

1301121012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6476851.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1301121012221 its reverse (1222101211031), we get a palindrome (2523222223252).

The spelling of 1301121012221 in words is "one trillion, three hundred one billion, one hundred twenty-one million, twelve thousand, two hundred twenty-one".