21122210102012 has 6 divisors (see below), whose sum is σ = 36963867678528. Its totient is φ = 10561105051004.

The previous prime is 21122210101987. The next prime is 21122210102087. The reversal of 21122210102012 is 21020101222112.

It is a super-2 number, since 2×21122210102012² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2640276262748 + ... + 2640276262755.

It is an arithmetic number, because the mean of its divisors is an integer number (6160644613088).

Almost surely, 2^{21122210102012} is an apocalyptic number.

It is an amenable number.

21122210102012 is a deficient number, since it is larger than the sum of its proper divisors (15841657576516).

21122210102012 is a wasteful number, since it uses less digits than its factorization.

21122210102012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5280552525507 (or 5280552525505 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21122210102012 its reverse (21020101222112), we get a palindrome (42142311324124).

The spelling of 21122210102012 in words is "twenty-one trillion, one hundred twenty-two billion, two hundred ten million, one hundred two thousand, twelve".