21203032041 has 16 divisors (see below), whose sum is σ = 31414158720. Its totient is φ = 14134338000.

The previous prime is 21203031979. The next prime is 21203032063. The reversal of 21203032041 is 14023030212.

It is not a de Polignac number, because 21203032041 - 2¹⁷ = 21202900969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21203032441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 651916 + ... + 683666.

It is an arithmetic number, because the mean of its divisors is an integer number (1963384920).

Almost surely, 2^21203032041 is an apocalyptic number.

It is an amenable number.

21203032041 is a deficient number, since it is larger than the sum of its proper divisors (10211126679).

21203032041 is a wasteful number, since it uses less digits than its factorization.

21203032041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56493 (or 56487 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21203032041 its reverse (14023030212), we get a palindrome (35226062253).

The spelling of 21203032041 in words is "twenty-one billion, two hundred three million, thirty-two thousand, forty-one".