20103132021 has 32 divisors (see below), whose sum is σ = 31721164800. Its totient is φ = 11080359360.

The previous prime is 20103132019. The next prime is 20103132089. The reversal of 20103132021 is 12023130102.

It is not a de Polignac number, because 20103132021 - 2¹ = 20103132019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103172021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 616866 + ... + 648636.

It is an arithmetic number, because the mean of its divisors is an integer number (991286400).

Almost surely, 2^20103132021 is an apocalyptic number.

20103132021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20103132021 is a deficient number, since it is larger than the sum of its proper divisors (11618032779).

20103132021 is a wasteful number, since it uses less digits than its factorization.

20103132021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32849.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20103132021 its reverse (12023130102), we get a palindrome (32126262123).

The spelling of 20103132021 in words is "twenty billion, one hundred three million, one hundred thirty-two thousand, twenty-one".