21000120022202 has 16 divisors (see below), whose sum is σ = 32268642200424. Its totient is φ = 10243908576000.

The previous prime is 21000120022121. The next prime is 21000120022229. The reversal of 21000120022202 is 20222002100012.

It can be written as a sum of positive squares in 4 ways, for example, as 20382416766721 + 617703255481 = 4514689^2 + 785941^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19069052 + ... + 20140232.

Almost surely, 2^{21000120022202} is an apocalyptic number.

21000120022202 is a deficient number, since it is larger than the sum of its proper divisors (11268522178222).

21000120022202 is a wasteful number, since it uses less digits than its factorization.

21000120022202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310305.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 21000120022202 its reverse (20222002100012), we get a palindrome (41222122122214).

The spelling of 21000120022202 in words is "twenty-one trillion, one hundred twenty million, twenty-two thousand, two hundred two".