1131212322121 has 8 divisors (see below), whose sum is σ = 1293297037760. Its totient is φ = 969248345328.

The previous prime is 1131212322091. The next prime is 1131212322157. The reversal of 1131212322121 is 1212232121311.

It is a happy number.

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 1131212322121 - 2³⁷ = 993773368649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1131212322092 and 1131212322101.

It is not an unprimeable number, because it can be changed into a prime (1131212328121) 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, 30164631 + ... + 30202108.

It is an arithmetic number, because the mean of its divisors is an integer number (161662129720).

Almost surely, 2^{1131212322121} is an apocalyptic number.

It is an amenable number.

1131212322121 is a deficient number, since it is larger than the sum of its proper divisors (162084715639).

1131212322121 is an equidigital number, since it uses as much as digits as its factorization.

1131212322121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60369423.

The product of its digits is 288, while the sum is 22.

Adding to 1131212322121 its reverse (1212232121311), we get a palindrome (2343444443432).

The spelling of 1131212322121 in words is "one trillion, one hundred thirty-one billion, two hundred twelve million, three hundred twenty-two thousand, one hundred twenty-one".