21011122022 has 8 divisors (see below), whose sum is σ = 34381836072. Its totient is φ = 9550510000.

The previous prime is 21011122009. The next prime is 21011122049. The reversal of 21011122022 is 22022111012.

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

It is a junction number, because it is equal to n+sod(n) for n = 21011121988 and 21011122006.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 477525479 + ... + 477525522.

It is an arithmetic number, because the mean of its divisors is an integer number (4297729509).

Almost surely, 2^21011122022 is an apocalyptic number.

21011122022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21011122022 is a deficient number, since it is larger than the sum of its proper divisors (13370714050).

21011122022 is a wasteful number, since it uses less digits than its factorization.

21011122022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955051014.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21011122022 its reverse (22022111012), we get a palindrome (43033233034).

The spelling of 21011122022 in words is "twenty-one billion, eleven million, one hundred twenty-two thousand, twenty-two".