52121661212330 has 16 divisors (see below), whose sum is σ = 94535165682144. Its totient is φ = 20689514373840.

The previous prime is 52121661212281. The next prime is 52121661212339. The reversal of 52121661212330 is 3321216612125.

It is not an unprimeable number, because it can be changed into a prime (52121661212339) 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, 19893762512 + ... + 19893765131.

It is an arithmetic number, because the mean of its divisors is an integer number (5908447855134).

Almost surely, 2^{52121661212330} is an apocalyptic number.

52121661212330 is a deficient number, since it is larger than the sum of its proper divisors (42413504469814).

52121661212330 is a wasteful number, since it uses less digits than its factorization.

52121661212330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39787527781.

The product of its (nonzero) digits is 25920, while the sum is 35.

Adding to 52121661212330 its reverse (3321216612125), we get a palindrome (55442877824455).

The spelling of 52121661212330 in words is "fifty-two trillion, one hundred twenty-one billion, six hundred sixty-one million, two hundred twelve thousand, three hundred thirty".