211202413421 has 8 divisors (see below), whose sum is σ = 220439626944. Its totient is φ = 201969741600.

The previous prime is 211202413391. The next prime is 211202413451. The reversal of 211202413421 is 124314202112.

It is an interprime number because it is at equal distance from previous prime (211202413391) and next prime (211202413451).

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

It is a cyclic number.

It is not a de Polignac number, because 211202413421 - 2¹⁴ = 211202397037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211202413451) 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, 1040216 + ... + 1226561.

It is an arithmetic number, because the mean of its divisors is an integer number (27554953368).

Almost surely, 2^211202413421 is an apocalyptic number.

It is an amenable number.

211202413421 is a deficient number, since it is larger than the sum of its proper divisors (9237213523).

211202413421 is a wasteful number, since it uses less digits than its factorization.

211202413421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2270851.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 211202413421 its reverse (124314202112), we get a palindrome (335516615533).

The spelling of 211202413421 in words is "two hundred eleven billion, two hundred two million, four hundred thirteen thousand, four hundred twenty-one".