11222211120121 has 16 divisors (see below), whose sum is σ = 11406206947968. Its totient is φ = 11038962211200.

The previous prime is 11222211120103. The next prime is 11222211120143. The reversal of 11222211120121 is 12102111222211.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11222211120121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11222211120101) 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, 59892301 + ... + 60079381.

It is an arithmetic number, because the mean of its divisors is an integer number (712887934248).

Almost surely, 2^{11222211120121} is an apocalyptic number.

It is an amenable number.

11222211120121 is a deficient number, since it is larger than the sum of its proper divisors (183995827847).

11222211120121 is a wasteful number, since it uses less digits than its factorization.

11222211120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189072.

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

Adding to 11222211120121 its reverse (12102111222211), we get a palindrome (23324322342332).

The spelling of 11222211120121 in words is "eleven trillion, two hundred twenty-two billion, two hundred eleven million, one hundred twenty thousand, one hundred twenty-one".