20100221013 has 8 divisors (see below), whose sum is σ = 27453960576. Its totient is φ = 13073314400.

The previous prime is 20100221003. The next prime is 20100221027. The reversal of 20100221013 is 31012200102.

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 20100221013 - 2¹⁶ = 20100155477 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20100221013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100221003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81708093 + ... + 81708338.

It is an arithmetic number, because the mean of its divisors is an integer number (3431745072).

Almost surely, 2^20100221013 is an apocalyptic number.

It is an amenable number.

20100221013 is a deficient number, since it is larger than the sum of its proper divisors (7353739563).

20100221013 is a wasteful number, since it uses less digits than its factorization.

20100221013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163416475.

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

Adding to 20100221013 its reverse (31012200102), we get a palindrome (51112421115).

The spelling of 20100221013 in words is "twenty billion, one hundred million, two hundred twenty-one thousand, thirteen".