2211212030121 has 12 divisors (see below), whose sum is σ = 3194006542272. Its totient is φ = 1474125841176.

The previous prime is 2211212029997. The next prime is 2211212030141. The reversal of 2211212030121 is 1210302121122.

2211212030121 is a `hidden beast` number, since 221 + 1 + 2 + 120 + 301 + 21 = 666.

It is not a de Polignac number, because 2211212030121 - 2¹³ = 2211212021929 is a prime.

It is a super-2 number, since 2×2211212030121² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2211212030094 and 2211212030103.

It is not an unprimeable number, because it can be changed into a prime (2211212030141) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 354021 + ... + 2132546.

It is an arithmetic number, because the mean of its divisors is an integer number (266167211856).

Almost surely, 2^{2211212030121} is an apocalyptic number.

It is an amenable number.

2211212030121 is a deficient number, since it is larger than the sum of its proper divisors (982794512151).

2211212030121 is a wasteful number, since it uses less digits than its factorization.

2211212030121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2585380 (or 2585377 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2211212030121 its reverse (1210302121122), we get a palindrome (3421514151243).

The spelling of 2211212030121 in words is "two trillion, two hundred eleven billion, two hundred twelve million, thirty thousand, one hundred twenty-one".