12212211101121 has 6 divisors (see below), whose sum is σ = 17639860479410. Its totient is φ = 8141474067408.

The previous prime is 12212211101107. The next prime is 12212211101131. The reversal of 12212211101121 is 12110111221221.

It is a happy number.

12212211101121 is a `hidden beast` number, since 1 + 221 + 221 + 1 + 101 + 121 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9235758043521 + 2976453057600 = 3039039^2 + 1725240^2 .

It is not a de Polignac number, because 12212211101121 - 2¹⁵ = 12212211068353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12212211101094 and 12212211101103.

It is not an unprimeable number, because it can be changed into a prime (12212211101131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 678456172276 + ... + 678456172293.

Almost surely, 2^{12212211101121} is an apocalyptic number.

It is an amenable number.

12212211101121 is a deficient number, since it is larger than the sum of its proper divisors (5427649378289).

12212211101121 is a wasteful number, since it uses less digits than its factorization.

12212211101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356912344575 (or 1356912344572 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 12212211101121 its reverse (12110111221221), we get a palindrome (24322322322342).

The spelling of 12212211101121 in words is "twelve trillion, two hundred twelve billion, two hundred eleven million, one hundred one thousand, one hundred twenty-one".