210011212122122 has 64 divisors (see below), whose sum is σ = 355143598761600. Its totient is φ = 92550190233600.

The previous prime is 210011212122121. The next prime is 210011212122143. The reversal of 210011212122122 is 221221212110012.

It is a junction number, because it is equal to n+sod(n) for n = 210011212122094 and 210011212122103.

It is not an unprimeable number, because it can be changed into a prime (210011212122121) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 212291813 + ... + 213278775.

It is an arithmetic number, because the mean of its divisors is an integer number (5549118730650).

Almost surely, 2^{210011212122122} is an apocalyptic number.

210011212122122 is a deficient number, since it is larger than the sum of its proper divisors (145132386639478).

210011212122122 is a wasteful number, since it uses less digits than its factorization.

210011212122122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990791.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 210011212122122 its reverse (221221212110012), we get a palindrome (431232424232134).

The spelling of 210011212122122 in words is "two hundred ten trillion, eleven billion, two hundred twelve million, one hundred twenty-two thousand, one hundred twenty-two".