1120001220121 has 32 divisors (see below), whose sum is σ = 1360808709120. Its totient is φ = 899857382400.

The previous prime is 1120001220119. The next prime is 1120001220131. The reversal of 1120001220121 is 1210221000211.

It is not a de Polignac number, because 1120001220121 - 2¹ = 1120001220119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1120001220131) 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 31 ways as a sum of consecutive naturals, for example, 146958691 + ... + 146966311.

It is an arithmetic number, because the mean of its divisors is an integer number (42525272160).

Almost surely, 2^{1120001220121} is an apocalyptic number.

It is an amenable number.

1120001220121 is a deficient number, since it is larger than the sum of its proper divisors (240807488999).

1120001220121 is a wasteful number, since it uses less digits than its factorization.

1120001220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12505.

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

Adding to 1120001220121 its reverse (1210221000211), we get a palindrome (2330222220332).

The spelling of 1120001220121 in words is "one trillion, one hundred twenty billion, one million, two hundred twenty thousand, one hundred twenty-one".