252121305555010 has 32 divisors (see below), whose sum is σ = 455275475070192. Its totient is φ = 100524726881280.

The previous prime is 252121305554953. The next prime is 252121305555019. The reversal of 252121305555010 is 10555503121252.

It can be written as a sum of positive squares in 8 ways, for example, as 20070283520169 + 232051022034841 = 4479987^2 + 15233221^2 .

It is a super-2 number, since 2×252121305555010² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (252121305555019) 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, 207404380 + ... + 208616440.

Almost surely, 2^{252121305555010} is an apocalyptic number.

252121305555010 is a deficient number, since it is larger than the sum of its proper divisors (203154169515182).

252121305555010 is a wasteful number, since it uses less digits than its factorization.

252121305555010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278838.

The product of its (nonzero) digits is 75000, while the sum is 37.

Adding to 252121305555010 its reverse (10555503121252), we get a palindrome (262676808676262).

The spelling of 252121305555010 in words is "two hundred fifty-two trillion, one hundred twenty-one billion, three hundred five million, five hundred fifty-five thousand, ten".