2220112122121 has 16 divisors (see below), whose sum is σ = 2397439010880. Its totient is φ = 2048181821440.

The previous prime is 2220112122083. The next prime is 2220112122133. The reversal of 2220112122121 is 1212212110222.

It is a cyclic number.

It is not a de Polignac number, because 2220112122121 - 2⁷ = 2220112121993 is a prime.

It is a super-2 number, since 2×2220112122121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2220112122421) 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, 2841400 + ... + 3537481.

It is an arithmetic number, because the mean of its divisors is an integer number (149839938180).

Almost surely, 2^{2220112122121} is an apocalyptic number.

It is an amenable number.

2220112122121 is a deficient number, since it is larger than the sum of its proper divisors (177326888759).

2220112122121 is a wasteful number, since it uses less digits than its factorization.

2220112122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6379304.

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

Adding to 2220112122121 its reverse (1212212110222), we get a palindrome (3432324232343).

The spelling of 2220112122121 in words is "two trillion, two hundred twenty billion, one hundred twelve million, one hundred twenty-two thousand, one hundred twenty-one".