1220231300021 has 8 divisors (see below), whose sum is σ = 1249805583840. Its totient is φ = 1190991189168.

The previous prime is 1220231300011. The next prime is 1220231300051. The reversal of 1220231300021 is 1200031320221.

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

It is a cyclic number.

It is not a de Polignac number, because 1220231300021 - 2¹⁸ = 1220231037877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220231300011) 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, 83535851 + ... + 83550456.

It is an arithmetic number, because the mean of its divisors is an integer number (156225697980).

Almost surely, 2^{1220231300021} is an apocalyptic number.

It is an amenable number.

1220231300021 is a deficient number, since it is larger than the sum of its proper divisors (29574283819).

1220231300021 is a wasteful number, since it uses less digits than its factorization.

1220231300021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167086483.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1220231300021 its reverse (1200031320221), we get a palindrome (2420262620242).

The spelling of 1220231300021 in words is "one trillion, two hundred twenty billion, two hundred thirty-one million, three hundred thousand, twenty-one".