2122221201121 has 4 divisors (see below), whose sum is σ = 2425395658432. Its totient is φ = 1819046743812.

The previous prime is 2122221201109. The next prime is 2122221201127. The reversal of 2122221201121 is 1211021222212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2122221201121 - 2⁷ = 2122221200993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2122221201127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151587228645 + ... + 151587228658.

It is an arithmetic number, because the mean of its divisors is an integer number (606348914608).

Almost surely, 2^{2122221201121} is an apocalyptic number.

It is an amenable number.

2122221201121 is a deficient number, since it is larger than the sum of its proper divisors (303174457311).

2122221201121 is an equidigital number, since it uses as much as digits as its factorization.

2122221201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303174457310.

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

Adding to 2122221201121 its reverse (1211021222212), we get a palindrome (3333242423333).

The spelling of 2122221201121 in words is "two trillion, one hundred twenty-two billion, two hundred twenty-one million, two hundred one thousand, one hundred twenty-one".