1122120121 has 4 divisors (see below), whose sum is σ = 1125510544. Its totient is φ = 1118729700.

The previous prime is 1122120101. The next prime is 1122120133. The reversal of 1122120121 is 1210212211.

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 1122120121 - 2⁵ = 1122120089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1122120101) 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, 1694715 + ... + 1695376.

It is an arithmetic number, because the mean of its divisors is an integer number (281377636).

Almost surely, 2^1122120121 is an apocalyptic number.

It is an amenable number.

1122120121 is a deficient number, since it is larger than the sum of its proper divisors (3390423).

1122120121 is an equidigital number, since it uses as much as digits as its factorization.

1122120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3390422.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1122120121 is about 33498.0614513736. The cubic root of 1122120121 is about 1039.1536880316.

Adding to 1122120121 its reverse (1210212211), we get a palindrome (2332332332).

The spelling of 1122120121 in words is "one billion, one hundred twenty-two million, one hundred twenty thousand, one hundred twenty-one".