55212605100321 has 16 divisors (see below), whose sum is σ = 73625271681024. Its totient is φ = 36804171280464.

The previous prime is 55212605100319. The next prime is 55212605100379. The reversal of 55212605100321 is 12300150621255.

It is not a de Polignac number, because 55212605100321 - 2¹ = 55212605100319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55212605107321) 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, 1745726910 + ... + 1745758536.

It is an arithmetic number, because the mean of its divisors is an integer number (4601579480064).

Almost surely, 2^{55212605100321} is an apocalyptic number.

It is an amenable number.

55212605100321 is a deficient number, since it is larger than the sum of its proper divisors (18412666580703).

55212605100321 is a wasteful number, since it uses less digits than its factorization.

55212605100321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80140.

The product of its (nonzero) digits is 18000, while the sum is 33.

Adding to 55212605100321 its reverse (12300150621255), we get a palindrome (67512755721576).

The spelling of 55212605100321 in words is "fifty-five trillion, two hundred twelve billion, six hundred five million, one hundred thousand, three hundred twenty-one".