21102022202012 has 6 divisors (see below), whose sum is σ = 36928538853528. Its totient is φ = 10551011101004.

The previous prime is 21102022201901. The next prime is 21102022202021. The reversal of 21102022202012 is 21020222020112.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2637752775248 + ... + 2637752775255.

It is an arithmetic number, because the mean of its divisors is an integer number (6154756475588).

Almost surely, 2^{21102022202012} is an apocalyptic number.

It is an amenable number.

21102022202012 is a deficient number, since it is larger than the sum of its proper divisors (15826516651516).

21102022202012 is a wasteful number, since it uses less digits than its factorization.

21102022202012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5275505550507 (or 5275505550505 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21102022202012 its reverse (21020222020112), we get a palindrome (42122244222124).

The spelling of 21102022202012 in words is "twenty-one trillion, one hundred two billion, twenty-two million, two hundred two thousand, twelve".