212102102012122 has 32 divisors (see below), whose sum is σ = 371365414963200. Its totient is φ = 90817275059280.

The previous prime is 212102102012117. The next prime is 212102102012131. The reversal of 212102102012122 is 221210201201212.

It is a super-2 number, since 2×212102102012122² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212102102012122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141474529 + ... + 142965892.

It is an arithmetic number, because the mean of its divisors is an integer number (11605169217600).

Almost surely, 2^{212102102012122} is an apocalyptic number.

212102102012122 is a deficient number, since it is larger than the sum of its proper divisors (159263312951078).

212102102012122 is a wasteful number, since it uses less digits than its factorization.

212102102012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284441531 (or 284441517 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 212102102012122 its reverse (221210201201212), we get a palindrome (433312303213334).

The spelling of 212102102012122 in words is "two hundred twelve trillion, one hundred two billion, one hundred two million, twelve thousand, one hundred twenty-two".