211313713221 has 16 divisors (see below), whose sum is σ = 337138688320. Its totient is φ = 130039207920.

The previous prime is 211313713217. The next prime is 211313713241. The reversal of 211313713221 is 122317313112.

211313713221 is a `hidden beast` number, since 21 + 1 + 313 + 7 + 1 + 322 + 1 = 666.

It is not a de Polignac number, because 211313713221 - 2² = 211313713217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211313713211) 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, 301016335 + ... + 301017036.

It is an arithmetic number, because the mean of its divisors is an integer number (21071168020).

Almost surely, 2^211313713221 is an apocalyptic number.

It is an amenable number.

211313713221 is a deficient number, since it is larger than the sum of its proper divisors (125824975099).

211313713221 is a wasteful number, since it uses less digits than its factorization.

211313713221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602033393 (or 602033387 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The spelling of 211313713221 in words is "two hundred eleven billion, three hundred thirteen million, seven hundred thirteen thousand, two hundred twenty-one".