212115540225122 has 16 divisors (see below), whose sum is σ = 318215600887200. Its totient is φ = 106043673726720.

The previous prime is 212115540225119. The next prime is 212115540225161. The reversal of 212115540225122 is 221522045511212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1639425029 + ... + 1639554407.

It is an arithmetic number, because the mean of its divisors is an integer number (19888475055450).

Almost surely, 2^{212115540225122} is an apocalyptic number.

212115540225122 is a deficient number, since it is larger than the sum of its proper divisors (106100060662078).

212115540225122 is a wasteful number, since it uses less digits than its factorization.

212115540225122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232001.

The product of its (nonzero) digits is 32000, while the sum is 35.

Adding to 212115540225122 its reverse (221522045511212), we get a palindrome (433637585736334).

The spelling of 212115540225122 in words is "two hundred twelve trillion, one hundred fifteen billion, five hundred forty million, two hundred twenty-five thousand, one hundred twenty-two".