10212121212222 has 64 divisors (see below), whose sum is σ = 21225486530304. Its totient is φ = 3272792325120.

The previous prime is 10212121212187. The next prime is 10212121212281. The reversal of 10212121212222 is 22221212121201.

It is a super-2 number, since 2×10212121212222² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13477597 + ... + 14215127.

It is an arithmetic number, because the mean of its divisors is an integer number (331648227036).

Almost surely, 2^{10212121212222} is an apocalyptic number.

10212121212222 is an abundant number, since it is smaller than the sum of its proper divisors (11013365318082).

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

10212121212222 is a wasteful number, since it uses less digits than its factorization.

10212121212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738313.

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

Adding to 10212121212222 its reverse (22221212121201), we get a palindrome (32433333333423).

The spelling of 10212121212222 in words is "ten trillion, two hundred twelve billion, one hundred twenty-one million, two hundred twelve thousand, two hundred twenty-two".