211420213404 has 48 divisors (see below), whose sum is σ = 509339013120. Its totient is φ = 68185091520.

The previous prime is 211420213399. The next prime is 211420213447. The reversal of 211420213404 is 404312024112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1700637 + ... + 1820715.

It is an arithmetic number, because the mean of its divisors is an integer number (10611229440).

Almost surely, 2^211420213404 is an apocalyptic number.

It is an amenable number.

211420213404 is an abundant number, since it is smaller than the sum of its proper divisors (297918799716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211420213404 is a wasteful number, since it uses less digits than its factorization.

211420213404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124850 (or 124848 counting only the distinct ones).

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

Adding to 211420213404 its reverse (404312024112), we get a palindrome (615732237516).

The spelling of 211420213404 in words is "two hundred eleven billion, four hundred twenty million, two hundred thirteen thousand, four hundred four".