2222121011121 has 24 divisors (see below), whose sum is σ = 3501733978080. Its totient is φ = 1346659252800.

The previous prime is 2222121011083. The next prime is 2222121011129. The reversal of 2222121011121 is 1211101212222.

It is not a de Polignac number, because 2222121011121 - 2²⁷ = 2221986793393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2222121011094 and 2222121011103.

It is not an unprimeable number, because it can be changed into a prime (2222121011129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1007506 + ... + 2336516.

It is an arithmetic number, because the mean of its divisors is an integer number (145905582420).

Almost surely, 2^{2222121011121} is an apocalyptic number.

It is an amenable number.

2222121011121 is a deficient number, since it is larger than the sum of its proper divisors (1279612966959).

2222121011121 is a wasteful number, since it uses less digits than its factorization.

2222121011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345917 (or 1345914 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2222121011121 its reverse (1211101212222), we get a palindrome (3433222223343).

The spelling of 2222121011121 in words is "two trillion, two hundred twenty-two billion, one hundred twenty-one million, eleven thousand, one hundred twenty-one".