10112212221221 has 16 divisors (see below), whose sum is σ = 11720281220928. Its totient is φ = 8622630585600.

The previous prime is 10112212221217. The next prime is 10112212221227. The reversal of 10112212221221 is 12212221221101.

10112212221221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 10112212221221 - 2² = 10112212221217 is a prime.

It is a super-2 number, since 2×10112212221221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10112212221193 and 10112212221202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10112212221227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92225075 + ... + 92334656.

It is an arithmetic number, because the mean of its divisors is an integer number (732517576308).

Almost surely, 2^{10112212221221} is an apocalyptic number.

10112212221221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10112212221221 is a deficient number, since it is larger than the sum of its proper divisors (1608068999707).

10112212221221 is a wasteful number, since it uses less digits than its factorization.

10112212221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184560052.

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

Adding to 10112212221221 its reverse (12212221221101), we get a palindrome (22324433442322).

It can be divided in two parts, 101 and 12212221221, that multiplied together give a palindrome (1233434343321).

The spelling of 10112212221221 in words is "ten trillion, one hundred twelve billion, two hundred twelve million, two hundred twenty-one thousand, two hundred twenty-one".