21011011021022 has 64 divisors (see below), whose sum is σ = 36711911439360. Its totient is φ = 8986966750080.

The previous prime is 21011011021009. The next prime is 21011011021087. The reversal of 21011011021022 is 22012011011012.

It is a super-3 number, since 3×21011011021022³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21011011020988 and 21011011021006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 255508229 + ... + 255590447.

It is an arithmetic number, because the mean of its divisors is an integer number (573623616240).

Almost surely, 2^{21011011021022} is an apocalyptic number.

21011011021022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21011011021022 is a deficient number, since it is larger than the sum of its proper divisors (15700900418338).

21011011021022 is a wasteful number, since it uses less digits than its factorization.

21011011021022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87918 (or 87896 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21011011021022 its reverse (22012011011012), we get a palindrome (43023022032034).

The spelling of 21011011021022 in words is "twenty-one trillion, eleven billion, eleven million, twenty-one thousand, twenty-two".