1131222121001 has 16 divisors (see below), whose sum is σ = 1295444451840. Its totient is φ = 967656507840.

The previous prime is 1131222120989. The next prime is 1131222121027. The reversal of 1131222121001 is 1001212221311.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131222121001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1131222121061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7064315 + ... + 7222671.

It is an arithmetic number, because the mean of its divisors is an integer number (80965278240).

Almost surely, 2^{1131222121001} is an apocalyptic number.

It is an amenable number.

1131222121001 is a deficient number, since it is larger than the sum of its proper divisors (164222330839).

1131222121001 is a wasteful number, since it uses less digits than its factorization.

1131222121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160424.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1131222121001 its reverse (1001212221311), we get a palindrome (2132434342312).

The spelling of 1131222121001 in words is "one trillion, one hundred thirty-one billion, two hundred twenty-two million, one hundred twenty-one thousand, one".