21022201031 has 8 divisors (see below), whose sum is σ = 23120981184. Its totient is φ = 18992233440.

The previous prime is 21022200973. The next prime is 21022201033. The reversal of 21022201031 is 13010222012.

It is a happy number.

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 21022201031 - 2¹⁰ = 21022200007 is a prime.

It is a super-2 number, since 2×21022201031² (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 = 21022200997 and 21022201015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022201033) 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, 17202500 + ... + 17203721.

It is an arithmetic number, because the mean of its divisors is an integer number (2890122648).

Almost surely, 2^21022201031 is an apocalyptic number.

21022201031 is a deficient number, since it is larger than the sum of its proper divisors (2098780153).

21022201031 is a wasteful number, since it uses less digits than its factorization.

21022201031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34406281.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21022201031 its reverse (13010222012), we get a palindrome (34032423043).

The spelling of 21022201031 in words is "twenty-one billion, twenty-two million, two hundred one thousand, thirty-one".