213414125001621 has 16 divisors (see below), whose sum is σ = 286402853827584. Its totient is φ = 141350981863104.

The previous prime is 213414125001617. The next prime is 213414125001643. The reversal of 213414125001621 is 126100521414312.

It is not a de Polignac number, because 213414125001621 - 2² = 213414125001617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213414121001621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26733310 + ... + 33786063.

It is an arithmetic number, because the mean of its divisors is an integer number (17900178364224).

Almost surely, 2^{213414125001621} is an apocalyptic number.

It is an amenable number.

213414125001621 is a deficient number, since it is larger than the sum of its proper divisors (72988728825963).

213414125001621 is a wasteful number, since it uses less digits than its factorization.

213414125001621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60527020.

The product of its (nonzero) digits is 11520, while the sum is 33.

Adding to 213414125001621 its reverse (126100521414312), we get a palindrome (339514646415933).

The spelling of 213414125001621 in words is "two hundred thirteen trillion, four hundred fourteen billion, one hundred twenty-five million, one thousand, six hundred twenty-one".