2741772221721 has 64 divisors (see below), whose sum is σ = 4426459107840. Its totient is φ = 1667207059200.

The previous prime is 2741772221711. The next prime is 2741772221729. The reversal of 2741772221721 is 1271222771472.

2741772221721 is a `hidden beast` number, since 2 + 7 + 417 + 7 + 2 + 221 + 7 + 2 + 1 = 666.

It is not a de Polignac number, because 2741772221721 - 2⁵ = 2741772221689 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2741772221729) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17754975 + ... + 17908731.

It is an arithmetic number, because the mean of its divisors is an integer number (69163423560).

Almost surely, 2^{2741772221721} is an apocalyptic number.

It is an amenable number.

2741772221721 is a deficient number, since it is larger than the sum of its proper divisors (1684686886119).

2741772221721 is a wasteful number, since it uses less digits than its factorization.

2741772221721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154383 (or 154377 counting only the distinct ones).

The product of its digits is 307328, while the sum is 45.

The spelling of 2741772221721 in words is "two trillion, seven hundred forty-one billion, seven hundred seventy-two million, two hundred twenty-one thousand, seven hundred twenty-one".