21212102022202 has 16 divisors (see below), whose sum is σ = 39160803733632. Its totient is φ = 8391600799920.

The previous prime is 21212102022131. The next prime is 21212102022289. The reversal of 21212102022202 is 20222020121212.

It is a super-3 number, since 3×21212102022202³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21212102022202.

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, 58275005374 + ... + 58275005737.

It is an arithmetic number, because the mean of its divisors is an integer number (2447550233352).

Almost surely, 2^{21212102022202} is an apocalyptic number.

21212102022202 is a deficient number, since it is larger than the sum of its proper divisors (17948701711430).

21212102022202 is a wasteful number, since it uses less digits than its factorization.

21212102022202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116550011133.

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

Adding to 21212102022202 its reverse (20222020121212), we get a palindrome (41434122143414).

The spelling of 21212102022202 in words is "twenty-one trillion, two hundred twelve billion, one hundred two million, twenty-two thousand, two hundred two".