215210401134242 has 16 divisors (see below), whose sum is σ = 322936091749440. Its totient is φ = 107565044675088.

The previous prime is 215210401134233. The next prime is 215210401134247. The reversal of 215210401134242 is 242431104012512.

It is a super-2 number, since 2×215210401134242² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 215210401134199 and 215210401134208.

It is not an unprimeable number, because it can be changed into a prime (215210401134247) 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, 56026484 + ... + 59744352.

It is an arithmetic number, because the mean of its divisors is an integer number (20183505734340).

Almost surely, 2^{215210401134242} is an apocalyptic number.

215210401134242 is a deficient number, since it is larger than the sum of its proper divisors (107725690615198).

215210401134242 is a wasteful number, since it uses less digits than its factorization.

215210401134242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3728665.

The product of its (nonzero) digits is 15360, while the sum is 32.

Adding to 215210401134242 its reverse (242431104012512), we get a palindrome (457641505146754).

The spelling of 215210401134242 in words is "two hundred fifteen trillion, two hundred ten billion, four hundred one million, one hundred thirty-four thousand, two hundred forty-two".