12220212021121 has 8 divisors (see below), whose sum is σ = 13165375111784. Its totient is φ = 11275784184960.

The previous prime is 12220212021103. The next prime is 12220212021137. The reversal of 12220212021121 is 12112021202221.

12220212021121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2183582513025 + 10036629508096 = 1477695^2 + 3168064^2 .

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 12220212021121 - 2¹¹ = 12220212019073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12220212021221) 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, 183779100 + ... + 183845581.

It is an arithmetic number, because the mean of its divisors is an integer number (1645671888973).

Almost surely, 2^{12220212021121} is an apocalyptic number.

It is an amenable number.

12220212021121 is a deficient number, since it is larger than the sum of its proper divisors (945163090663).

12220212021121 is a wasteful number, since it uses less digits than its factorization.

12220212021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367627251.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12220212021121 its reverse (12112021202221), we get a palindrome (24332233223342).

The spelling of 12220212021121 in words is "twelve trillion, two hundred twenty billion, two hundred twelve million, twenty-one thousand, one hundred twenty-one".