221214125120525 has 72 divisors (see below), whose sum is σ = 292736079941760. Its totient is φ = 165792562647040.

The previous prime is 221214125120509. The next prime is 221214125120531. The reversal of 221214125120525 is 525021521412122.

It is not a de Polignac number, because 221214125120525 - 2⁴ = 221214125120509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4173588674 + ... + 4173641676.

It is an arithmetic number, because the mean of its divisors is an integer number (4065778888080).

Almost surely, 2^{221214125120525} is an apocalyptic number.

221214125120525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

221214125120525 is a deficient number, since it is larger than the sum of its proper divisors (71521954821235).

221214125120525 is a wasteful number, since it uses less digits than its factorization.

221214125120525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55703 (or 55681 counting only the distinct ones).

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

Adding to 221214125120525 its reverse (525021521412122), we get a palindrome (746235646532647).

The spelling of 221214125120525 in words is "two hundred twenty-one trillion, two hundred fourteen billion, one hundred twenty-five million, one hundred twenty thousand, five hundred twenty-five".