20331001022 has 4 divisors (see below), whose sum is σ = 30496501536. Its totient is φ = 10165500510.

The previous prime is 20331000973. The next prime is 20331001027. The reversal of 20331001022 is 22010013302.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22010013302 = 2 ⋅11005006651.

It is a junction number, because it is equal to n+sod(n) for n = 20331000988 and 20331001006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331001027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5082750254 + ... + 5082750257.

It is an arithmetic number, because the mean of its divisors is an integer number (7624125384).

Almost surely, 2^20331001022 is an apocalyptic number.

20331001022 is a deficient number, since it is larger than the sum of its proper divisors (10165500514).

20331001022 is a wasteful number, since it uses less digits than its factorization.

20331001022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10165500513.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20331001022 its reverse (22010013302), we get a palindrome (42341014324).

The spelling of 20331001022 in words is "twenty billion, three hundred thirty-one million, one thousand, twenty-two".