21121202022 has 8 divisors (see below), whose sum is σ = 42242404056. Its totient is φ = 7040400672.

The previous prime is 21121202021. The next prime is 21121202023. The reversal of 21121202022 is 22020212112.

It is an interprime number because it is at equal distance from previous prime (21121202021) and next prime (21121202023).

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

21121202022 is an admirable number.

It is a super-2 number, since 2×21121202022² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21121201992 and 21121202010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21121202021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1760100163 + ... + 1760100174.

It is an arithmetic number, because the mean of its divisors is an integer number (5280300507).

Almost surely, 2^21121202022 is an apocalyptic number.

21121202022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21121202022 is a wasteful number, since it uses less digits than its factorization.

21121202022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3520200342.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21121202022 its reverse (22020212112), we get a palindrome (43141414134).

The spelling of 21121202022 in words is "twenty-one billion, one hundred twenty-one million, two hundred two thousand, twenty-two".