213402104421 has 16 divisors (see below), whose sum is σ = 310456411200. Its totient is φ = 129312379520.

The previous prime is 213402104417. The next prime is 213402104459. The reversal of 213402104421 is 124401204312.

It is a cyclic number.

It is not a de Polignac number, because 213402104421 - 2² = 213402104417 is a prime.

It is a super-2 number, since 2×213402104421² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213402104391 and 213402104400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213402104921) 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, 359790 + ... + 745823.

It is an arithmetic number, because the mean of its divisors is an integer number (19403525700).

Almost surely, 2^213402104421 is an apocalyptic number.

It is an amenable number.

213402104421 is a deficient number, since it is larger than the sum of its proper divisors (97054306779).

213402104421 is a wasteful number, since it uses less digits than its factorization.

213402104421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111476.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 213402104421 its reverse (124401204312), we get a palindrome (337803308733).

The spelling of 213402104421 in words is "two hundred thirteen billion, four hundred two million, one hundred four thousand, four hundred twenty-one".