1231121003001 has 8 divisors (see below), whose sum is σ = 1642760284704. Its totient is φ = 820114528320.

The previous prime is 1231121002963. The next prime is 1231121003011. The reversal of 1231121003001 is 1003001211321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1231121003001 - 2¹⁰ = 1231121001977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1231121003011) 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, 158197215 + ... + 158204996.

It is an arithmetic number, because the mean of its divisors is an integer number (205345035588).

Almost surely, 2^{1231121003001} is an apocalyptic number.

It is an amenable number.

1231121003001 is a deficient number, since it is larger than the sum of its proper divisors (411639281703).

1231121003001 is a wasteful number, since it uses less digits than its factorization.

1231121003001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316403511.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1231121003001 its reverse (1003001211321), we get a palindrome (2234122214322).

The spelling of 1231121003001 in words is "one trillion, two hundred thirty-one billion, one hundred twenty-one million, three thousand, one".