1131222121201 has 16 divisors (see below), whose sum is σ = 1242720460800. Its totient is φ = 1024933927248.

The previous prime is 1131222121181. The next prime is 1131222121217. The reversal of 1131222121201 is 1021212221311.

It is a cyclic number.

It is not a de Polignac number, because 1131222121201 - 2⁹ = 1131222120689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131222121241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2743570 + ... + 3128836.

It is an arithmetic number, because the mean of its divisors is an integer number (77670028800).

Almost surely, 2^{1131222121201} is an apocalyptic number.

It is an amenable number.

1131222121201 is a deficient number, since it is larger than the sum of its proper divisors (111498339599).

1131222121201 is a wasteful number, since it uses less digits than its factorization.

1131222121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392028.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 1131222121201 its reverse (1021212221311), we get a palindrome (2152434342512).

The spelling of 1131222121201 in words is "one trillion, one hundred thirty-one billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred one".