1121001222021 has 8 divisors (see below), whose sum is σ = 1494684133824. Its totient is φ = 747326229120.

The previous prime is 1121001221999. The next prime is 1121001222071. The reversal of 1121001222021 is 1202221001211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1121001222021 - 2¹⁷ = 1121001090949 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121001222071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1641145 + ... + 2221566.

It is an arithmetic number, because the mean of its divisors is an integer number (186835516728).

Almost surely, 2^{1121001222021} is an apocalyptic number.

It is an amenable number.

1121001222021 is a deficient number, since it is larger than the sum of its proper divisors (373682911803).

1121001222021 is an equidigital number, since it uses as much as digits as its factorization.

1121001222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3959451.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1121001222021 its reverse (1202221001211), we get a palindrome (2323222223232).

The spelling of 1121001222021 in words is "one trillion, one hundred twenty-one billion, one million, two hundred twenty-two thousand, twenty-one".