11220212112121 has 8 divisors (see below), whose sum is σ = 11225660140800. Its totient is φ = 11214764429232.

The previous prime is 11220212112061. The next prime is 11220212112149. The reversal of 11220212112121 is 12121121202211.

It is a happy number.

11220212112121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11220212112121 - 2⁷ = 11220212111993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11220212412121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84689496 + ... + 84821878.

It is an arithmetic number, because the mean of its divisors is an integer number (1403207517600).

Almost surely, 2^{11220212112121} is an apocalyptic number.

It is an amenable number.

11220212112121 is a deficient number, since it is larger than the sum of its proper divisors (5448028679).

11220212112121 is a wasteful number, since it uses less digits than its factorization.

11220212112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172895.

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

Adding to 11220212112121 its reverse (12121121202211), we get a palindrome (23341333314332).

The spelling of 11220212112121 in words is "eleven trillion, two hundred twenty billion, two hundred twelve million, one hundred twelve thousand, one hundred twenty-one".