2125220405215 has 4 divisors (see below), whose sum is σ = 2550264486264. Its totient is φ = 1700176324168.

The previous prime is 2125220405197. The next prime is 2125220405219. The reversal of 2125220405215 is 5125040225212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2125220405215 - 2¹¹ = 2125220403167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125220405219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212522040517 + ... + 212522040526.

It is an arithmetic number, because the mean of its divisors is an integer number (637566121566).

Almost surely, 2^{2125220405215} is an apocalyptic number.

2125220405215 is a deficient number, since it is larger than the sum of its proper divisors (425044081049).

2125220405215 is an equidigital number, since it uses as much as digits as its factorization.

2125220405215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425044081048.

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 2125220405215 in words is "two trillion, one hundred twenty-five billion, two hundred twenty million, four hundred five thousand, two hundred fifteen".