20103001221 has 8 divisors (see below), whose sum is σ = 26905919040. Its totient is φ = 13351042112.

The previous prime is 20103001201. The next prime is 20103001253. The reversal of 20103001221 is 12210030102.

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 20103001221 - 2⁵ = 20103001189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20103001197 and 20103001206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103001201) 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, 12738756 + ... + 12740333.

It is an arithmetic number, because the mean of its divisors is an integer number (3363239880).

Almost surely, 2^20103001221 is an apocalyptic number.

It is an amenable number.

20103001221 is a deficient number, since it is larger than the sum of its proper divisors (6802917819).

20103001221 is a wasteful number, since it uses less digits than its factorization.

20103001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25479355.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20103001221 its reverse (12210030102), we get a palindrome (32313031323).

The spelling of 20103001221 in words is "twenty billion, one hundred three million, one thousand, two hundred twenty-one".