10121121112222 has 4 divisors (see below), whose sum is σ = 15181681668336. Its totient is φ = 5060560556110.

The previous prime is 10121121112199. The next prime is 10121121112247. The reversal of 10121121112222 is 22221112112101.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 10121121112222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2530280278054 + ... + 2530280278057.

It is an arithmetic number, because the mean of its divisors is an integer number (3795420417084).

Almost surely, 2^{10121121112222} is an apocalyptic number.

10121121112222 is a deficient number, since it is larger than the sum of its proper divisors (5060560556114).

10121121112222 is an equidigital number, since it uses as much as digits as its factorization.

10121121112222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5060560556113.

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

Adding to 10121121112222 its reverse (22221112112101), we get a palindrome (32342233224323).

The spelling of 10121121112222 in words is "ten trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred twelve thousand, two hundred twenty-two".