21121012022 has 8 divisors (see below), whose sum is σ = 34561656072. Its totient is φ = 9600460000.

The previous prime is 21121012021. The next prime is 21121012037. The reversal of 21121012022 is 22021012112.

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 = 21121011988 and 21121012006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21121012021) 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 3 ways as a sum of consecutive naturals, for example, 480022979 + ... + 480023022.

It is an arithmetic number, because the mean of its divisors is an integer number (4320207009).

Almost surely, 2^21121012022 is an apocalyptic number.

21121012022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21121012022 is a deficient number, since it is larger than the sum of its proper divisors (13440644050).

21121012022 is a wasteful number, since it uses less digits than its factorization.

21121012022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960046014.

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

Adding to 21121012022 its reverse (22021012112), we get a palindrome (43142024134).

The spelling of 21121012022 in words is "twenty-one billion, one hundred twenty-one million, twelve thousand, twenty-two".