2246221631521 has 4 divisors (see below), whose sum is σ = 2567110436032. Its totient is φ = 1925332827012.

The previous prime is 2246221631497. The next prime is 2246221631561. The reversal of 2246221631521 is 1251361226422.

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 not a de Polignac number, because 2246221631521 - 2¹³ = 2246221623329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2246221631561) 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, 160444402245 + ... + 160444402258.

It is an arithmetic number, because the mean of its divisors is an integer number (641777609008).

Almost surely, 2^{2246221631521} is an apocalyptic number.

It is an amenable number.

2246221631521 is a deficient number, since it is larger than the sum of its proper divisors (320888804511).

2246221631521 is an equidigital number, since it uses as much as digits as its factorization.

2246221631521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320888804510.

The product of its digits is 69120, while the sum is 37.

Adding to 2246221631521 its reverse (1251361226422), we get a palindrome (3497582857943).

The spelling of 2246221631521 in words is "two trillion, two hundred forty-six billion, two hundred twenty-one million, six hundred thirty-one thousand, five hundred twenty-one".