10212121221222 has 32 divisors (see below), whose sum is σ = 20449619704800. Its totient is φ = 3399811467008.

The previous prime is 10212121221217. The next prime is 10212121221241. The reversal of 10212121221222 is 22212212121201.

10212121221222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 75360304 + ... + 75495692.

It is an arithmetic number, because the mean of its divisors is an integer number (639050615775).

Almost surely, 2^{10212121221222} is an apocalyptic number.

10212121221222 is an abundant number, since it is smaller than the sum of its proper divisors (10237498483578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10212121221222 is a wasteful number, since it uses less digits than its factorization.

10212121221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150920.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 10212121221222 its reverse (22212212121201), we get a palindrome (32424333342423).

The spelling of 10212121221222 in words is "ten trillion, two hundred twelve billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred twenty-two".