21011212200122 has 8 divisors (see below), whose sum is σ = 31516840106400. Its totient is φ = 10505598831324.

The previous prime is 21011212200119. The next prime is 21011212200133. The reversal of 21011212200122 is 22100221211012.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21011212200122.

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 3 ways as a sum of consecutive naturals, for example, 1341329 + ... + 6619787.

It is an arithmetic number, because the mean of its divisors is an integer number (3939605013300).

Almost surely, 2^{21011212200122} is an apocalyptic number.

21011212200122 is a deficient number, since it is larger than the sum of its proper divisors (10505627906278).

21011212200122 is a wasteful number, since it uses less digits than its factorization.

21011212200122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7268740.

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

Adding to 21011212200122 its reverse (22100221211012), we get a palindrome (43111433411134).

The spelling of 21011212200122 in words is "twenty-one trillion, eleven billion, two hundred twelve million, two hundred thousand, one hundred twenty-two".