2127421281772 has 12 divisors (see below), whose sum is σ = 3726893847096. Its totient is φ = 1062594468320.

The previous prime is 2127421281757. The next prime is 2127421281779. The reversal of 2127421281772 is 2771821247212.

It is not an unprimeable number, because it can be changed into a prime (2127421281779) 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, 279038854 + ... + 279046477.

It is an arithmetic number, because the mean of its divisors is an integer number (310574487258).

Almost surely, 2^{2127421281772} is an apocalyptic number.

It is an amenable number.

2127421281772 is a deficient number, since it is larger than the sum of its proper divisors (1599472565324).

2127421281772 is a wasteful number, since it uses less digits than its factorization.

2127421281772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558086288 (or 558086286 counting only the distinct ones).

The product of its digits is 351232, while the sum is 46.

The spelling of 2127421281772 in words is "two trillion, one hundred twenty-seven billion, four hundred twenty-one million, two hundred eighty-one thousand, seven hundred seventy-two".