1131211001121 has 16 divisors (see below), whose sum is σ = 1516166542464. Its totient is φ = 750198426624.

The previous prime is 1131211001113. The next prime is 1131211001153. The reversal of 1131211001121 is 1211001121311.

It is not a de Polignac number, because 1131211001121 - 2³ = 1131211001113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1131211001121.

It is not an unprimeable number, because it can be changed into a prime (1131211002121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20496255 + ... + 20551371.

It is an arithmetic number, because the mean of its divisors is an integer number (94760408904).

Almost surely, 2^{1131211001121} is an apocalyptic number.

It is an amenable number.

1131211001121 is a deficient number, since it is larger than the sum of its proper divisors (384955541343).

1131211001121 is a wasteful number, since it uses less digits than its factorization.

1131211001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90760.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 1131211001121 its reverse (1211001121311), we get a palindrome (2342212122432).

The spelling of 1131211001121 in words is "one trillion, one hundred thirty-one billion, two hundred eleven million, one thousand, one hundred twenty-one".