21020012002222 has 8 divisors (see below), whose sum is σ = 32900888351376. Its totient is φ = 10053049218432.

The previous prime is 21020012002219. The next prime is 21020012002277. The reversal of 21020012002222 is 22220021002012.

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

It is a super-3 number, since 3×21020012002222³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21020012002196 and 21020012002205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228478391283 + ... + 228478391374.

It is an arithmetic number, because the mean of its divisors is an integer number (4112611043922).

Almost surely, 2^{21020012002222} is an apocalyptic number.

21020012002222 is a deficient number, since it is larger than the sum of its proper divisors (11880876349154).

21020012002222 is a wasteful number, since it uses less digits than its factorization.

21020012002222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456956782682.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21020012002222 its reverse (22220021002012), we get a palindrome (43240033004234).

The spelling of 21020012002222 in words is "twenty-one trillion, twenty billion, twelve million, two thousand, two hundred twenty-two".