213211002311122 has 4 divisors (see below), whose sum is σ = 319816503466686. Its totient is φ = 106605501155560.

The previous prime is 213211002311119. The next prime is 213211002311123. The reversal of 213211002311122 is 221113200112312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 213155941219321 + 55061091801 = 14599861^2 + 234651^2 .

It is a junction number, because it is equal to n+sod(n) for n = 213211002311093 and 213211002311102.

It is not an unprimeable number, because it can be changed into a prime (213211002311123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53302750577779 + ... + 53302750577782.

Almost surely, 2^{213211002311122} is an apocalyptic number.

213211002311122 is a deficient number, since it is larger than the sum of its proper divisors (106605501155564).

213211002311122 is a wasteful number, since it uses less digits than its factorization.

213211002311122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106605501155563.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 213211002311122 its reverse (221113200112312), we get a palindrome (434324202423434).

The spelling of 213211002311122 in words is "two hundred thirteen trillion, two hundred eleven billion, two million, three hundred eleven thousand, one hundred twenty-two".