102403322021 has 16 divisors (see below), whose sum is σ = 137492573568. Its totient is φ = 73656734400.

The previous prime is 102403322017. The next prime is 102403322053. The reversal of 102403322021 is 120223304201.

It is a cyclic number.

It is not a de Polignac number, because 102403322021 - 2² = 102403322017 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 102403321984 and 102403322002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102403322821) 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, 51149510 + ... + 51151511.

It is an arithmetic number, because the mean of its divisors is an integer number (8593285848).

Almost surely, 2^102403322021 is an apocalyptic number.

102403322021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102403322021 is a deficient number, since it is larger than the sum of its proper divisors (35089251547).

102403322021 is a wasteful number, since it uses less digits than its factorization.

102403322021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102301052.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 102403322021 its reverse (120223304201), we get a palindrome (222626626222).

It can be divided in two parts, 102403 and 322021, that added together give a palindrome (424424).

The spelling of 102403322021 in words is "one hundred two billion, four hundred three million, three hundred twenty-two thousand, twenty-one".