2741772222221 has 4 divisors (see below), whose sum is σ = 2741798076192. Its totient is φ = 2741746368252.

The previous prime is 2741772222197. The next prime is 2741772222313. The reversal of 2741772222221 is 1222222771472.

It is a happy number.

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 not a de Polignac number, because 2741772222221 - 2³⁰ = 2740698480397 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 (2741772242221) 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, 12767255 + ... + 12980228.

It is an arithmetic number, because the mean of its divisors is an integer number (685449519048).

Almost surely, 2^{2741772222221} is an apocalyptic number.

It is an amenable number.

2741772222221 is a deficient number, since it is larger than the sum of its proper divisors (25853971).

2741772222221 is a wasteful number, since it uses less digits than its factorization.

2741772222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25853970.

The product of its digits is 175616, while the sum is 41.

Adding to 2741772222221 its reverse (1222222771472), we get a palindrome (3963994993693).

The spelling of 2741772222221 in words is "two trillion, seven hundred forty-one billion, seven hundred seventy-two million, two hundred twenty-two thousand, two hundred twenty-one".