10212112121122 has 4 divisors (see below), whose sum is σ = 15318168181686. Its totient is φ = 5106056060560.

The previous prime is 10212112121089. The next prime is 10212112121129. The reversal of 10212112121122 is 22112121121201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8444597709681 + 1767514411441 = 2905959^2 + 1329479^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 10212112121122.

It is not an unprimeable number, because it can be changed into a prime (10212112121129) 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 as a sum of consecutive naturals, namely, 2553028030279 + ... + 2553028030282.

Almost surely, 2^{10212112121122} is an apocalyptic number.

10212112121122 is a deficient number, since it is larger than the sum of its proper divisors (5106056060564).

10212112121122 is an equidigital number, since it uses as much as digits as its factorization.

10212112121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5106056060563.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 10212112121122 its reverse (22112121121201), we get a palindrome (32324233242323).

The spelling of 10212112121122 in words is "ten trillion, two hundred twelve billion, one hundred twelve million, one hundred twenty-one thousand, one hundred twenty-two".