213121332411242 has 8 divisors (see below), whose sum is σ = 319684422075876. Its totient is φ = 106559858385952.

The previous prime is 213121332411199. The next prime is 213121332411259. The reversal of 213121332411242 is 242114233121312.

It can be written as a sum of positive squares in 2 ways, for example, as 212293379824681 + 827952586561 = 14570291^2 + 909919^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 213121332411199 and 213121332411208.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403580003 + ... + 404107734.

Almost surely, 2^{213121332411242} is an apocalyptic number.

213121332411242 is a deficient number, since it is larger than the sum of its proper divisors (106563089664634).

213121332411242 is a wasteful number, since it uses less digits than its factorization.

213121332411242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807819672.

The product of its digits is 13824, while the sum is 32.

Adding to 213121332411242 its reverse (242114233121312), we get a palindrome (455235565532554).

The spelling of 213121332411242 in words is "two hundred thirteen trillion, one hundred twenty-one billion, three hundred thirty-two million, four hundred eleven thousand, two hundred forty-two".