1121001222001 has 8 divisors (see below), whose sum is σ = 1192967562600. Its totient is φ = 1049704336128.

The previous prime is 1121001221999. The next prime is 1121001222071. The reversal of 1121001222001 is 1002221001211.

It can be written as a sum of positive squares in 4 ways, for example, as 938091039601 + 182910182400 = 968551^2 + 427680^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1121001222001 - 2¹ = 1121001221999 is a prime.

It is a Duffinian 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, 167360226 + ... + 167366923.

It is an arithmetic number, because the mean of its divisors is an integer number (149120945325).

Almost surely, 2^{1121001222001} is an apocalyptic number.

It is an amenable number.

1121001222001 is a deficient number, since it is larger than the sum of its proper divisors (71966340599).

1121001222001 is a wasteful number, since it uses less digits than its factorization.

1121001222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334727363.

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

Adding to 1121001222001 its reverse (1002221001211), we get a palindrome (2123222223212).

The spelling of 1121001222001 in words is "one trillion, one hundred twenty-one billion, one million, two hundred twenty-two thousand, one".