2131103121001 has 4 divisors (see below), whose sum is σ = 2152203152004. Its totient is φ = 2110003090000.

The previous prime is 2131103120999. The next prime is 2131103121029. The reversal of 2131103121001 is 1001213011312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1252046864601 + 879056256400 = 1118949^2 + 937580^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131103121001 - 2¹ = 2131103120999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131103121071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10550015350 + ... + 10550015551.

It is an arithmetic number, because the mean of its divisors is an integer number (538050788001).

Almost surely, 2^{2131103121001} is an apocalyptic number.

It is an amenable number.

2131103121001 is a deficient number, since it is larger than the sum of its proper divisors (21100031003).

2131103121001 is a wasteful number, since it uses less digits than its factorization.

2131103121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21100031002.

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

Adding to 2131103121001 its reverse (1001213011312), we get a palindrome (3132316132313).

The spelling of 2131103121001 in words is "two trillion, one hundred thirty-one billion, one hundred three million, one hundred twenty-one thousand, one".