21020222212012 has 6 divisors (see below), whose sum is σ = 36785388871028. Its totient is φ = 10510111106004.

The previous prime is 21020222211997. The next prime is 21020222212057. The reversal of 21020222212012 is 21021222202012.

It is a super-3 number, since 3×21020222212012³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2627527776498 + ... + 2627527776505.

Almost surely, 2^{21020222212012} is an apocalyptic number.

It is an amenable number.

21020222212012 is a deficient number, since it is larger than the sum of its proper divisors (15765166659016).

21020222212012 is a wasteful number, since it uses less digits than its factorization.

21020222212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5255055553007 (or 5255055553005 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 21020222212012 its reverse (21021222202012), we get a palindrome (42041444414024).

The spelling of 21020222212012 in words is "twenty-one trillion, twenty billion, two hundred twenty-two million, two hundred twelve thousand, twelve".