2130421123001 has 4 divisors (see below), whose sum is σ = 2143990684452. Its totient is φ = 2116851561552.

The previous prime is 2130421122971. The next prime is 2130421123003. The reversal of 2130421123001 is 1003211240312.

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 1097677385401 + 1032743737600 = 1047701^2 + 1016240^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130421123001 - 2²⁶ = 2130354014137 is a prime.

It is a super-2 number, since 2×2130421123001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2130421123003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6784780490 + ... + 6784780803.

It is an arithmetic number, because the mean of its divisors is an integer number (535997671113).

Almost surely, 2^{2130421123001} is an apocalyptic number.

It is an amenable number.

2130421123001 is a deficient number, since it is larger than the sum of its proper divisors (13569561451).

2130421123001 is a wasteful number, since it uses less digits than its factorization.

2130421123001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13569561450.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2130421123001 its reverse (1003211240312), we get a palindrome (3133632363313).

The spelling of 2130421123001 in words is "two trillion, one hundred thirty billion, four hundred twenty-one million, one hundred twenty-three thousand, one".