1131211000321 has 16 divisors (see below), whose sum is σ = 1146024117504. Its totient is φ = 1116488265984.

The previous prime is 1131211000303. The next prime is 1131211000327. The reversal of 1131211000321 is 1230001121311.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1131211000321 - 2¹⁵ = 1131210967553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131211000295 and 1131211000304.

It is not an unprimeable number, because it can be changed into a prime (1131211000327) 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, 43922770 + ... + 43948516.

It is an arithmetic number, because the mean of its divisors is an integer number (71626507344).

Almost surely, 2^{1131211000321} is an apocalyptic number.

It is an amenable number.

1131211000321 is a deficient number, since it is larger than the sum of its proper divisors (14813117183).

1131211000321 is a wasteful number, since it uses less digits than its factorization.

1131211000321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27480.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1131211000321 its reverse (1230001121311), we get a palindrome (2361212121632).

The spelling of 1131211000321 in words is "one trillion, one hundred thirty-one billion, two hundred eleven million, three hundred twenty-one", and thus it is an aban number.