1221013223301 has 8 divisors (see below), whose sum is σ = 1723783374144. Its totient is φ = 766125944000.

The previous prime is 1221013223291. The next prime is 1221013223329. The reversal of 1221013223301 is 1033223101221.

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

It is not a de Polignac number, because 1221013223301 - 2⁷ = 1221013223173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221013223501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11970717825 + ... + 11970717926.

It is an arithmetic number, because the mean of its divisors is an integer number (215472921768).

Almost surely, 2^{1221013223301} is an apocalyptic number.

It is an amenable number.

1221013223301 is a deficient number, since it is larger than the sum of its proper divisors (502770150843).

1221013223301 is a wasteful number, since it uses less digits than its factorization.

1221013223301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23941435771.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1221013223301 its reverse (1033223101221), we get a palindrome (2254236324522).

The spelling of 1221013223301 in words is "one trillion, two hundred twenty-one billion, thirteen million, two hundred twenty-three thousand, three hundred one".