21022203031 has 8 divisors (see below), whose sum is σ = 21094502400. Its totient is φ = 20950023000.

The previous prime is 21022203029. The next prime is 21022203089. The reversal of 21022203031 is 13030222012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21022203031 - 2¹ = 21022203029 is a prime.

It is a super-2 number, since 2×21022203031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21022202996 and 21022203014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022203331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330510 + ... + 388948.

It is an arithmetic number, because the mean of its divisors is an integer number (2636812800).

Almost surely, 2^21022203031 is an apocalyptic number.

21022203031 is a deficient number, since it is larger than the sum of its proper divisors (72299369).

21022203031 is an equidigital number, since it uses as much as digits as its factorization.

21022203031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59669.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21022203031 its reverse (13030222012), we get a palindrome (34052425043).

The spelling of 21022203031 in words is "twenty-one billion, twenty-two million, two hundred three thousand, thirty-one".