2213015342521 has 4 divisors (see below), whose sum is σ = 2250524077200. Its totient is φ = 2175506607844.

The previous prime is 2213015342449. The next prime is 2213015342537. The reversal of 2213015342521 is 1252435103122.

It is a happy number.

2213015342521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2213015342521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2213015342621) 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, 18754367251 + ... + 18754367368.

It is an arithmetic number, because the mean of its divisors is an integer number (562631019300).

Almost surely, 2^{2213015342521} is an apocalyptic number.

It is an amenable number.

2213015342521 is a deficient number, since it is larger than the sum of its proper divisors (37508734679).

2213015342521 is an equidigital number, since it uses as much as digits as its factorization.

2213015342521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37508734678.

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 2213015342521 in words is "two trillion, two hundred thirteen billion, fifteen million, three hundred forty-two thousand, five hundred twenty-one".