21121102022 has 24 divisors (see below), whose sum is σ = 33988215600. Its totient is φ = 9840905600.

The previous prime is 21121101997. The next prime is 21121102049. The reversal of 21121102022 is 22020112112.

It is a super-2 number, since 2×21121102022² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21121101988 and 21121102006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122522 + ... + 239277.

It is an arithmetic number, because the mean of its divisors is an integer number (1416175650).

Almost surely, 2^21121102022 is an apocalyptic number.

21121102022 is a deficient number, since it is larger than the sum of its proper divisors (12867113578).

21121102022 is a wasteful number, since it uses less digits than its factorization.

21121102022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361936 (or 361919 counting only the distinct ones).

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

Adding to 21121102022 its reverse (22020112112), we get a palindrome (43141214134).

The spelling of 21121102022 in words is "twenty-one billion, one hundred twenty-one million, one hundred two thousand, twenty-two".