21202441023 has 8 divisors (see below), whose sum is σ = 28272117888. Its totient is φ = 14133862424.

The previous prime is 21202441009. The next prime is 21202441027. The reversal of 21202441023 is 32014420212.

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 21202441023 - 2¹⁶ = 21202375487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202441027) 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, 228411 + ... + 307532.

It is an arithmetic number, because the mean of its divisors is an integer number (3534014736).

Almost surely, 2^21202441023 is an apocalyptic number.

21202441023 is a deficient number, since it is larger than the sum of its proper divisors (7069676865).

21202441023 is a wasteful number, since it uses less digits than its factorization.

21202441023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549133.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 21202441023 its reverse (32014420212), we get a palindrome (53216861235).

It can be divided in two parts, 2120244 and 1023, that multiplied together give a palindrome (2169009612).

The spelling of 21202441023 in words is "twenty-one billion, two hundred two million, four hundred forty-one thousand, twenty-three".