2777777222222 has 32 divisors (see below), whose sum is σ = 4278698532864. Its totient is φ = 1351872784800.

The previous prime is 2777777222161. The next prime is 2777777222251. The reversal of 2777777222222 is 2222227777772.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78315572 + ... + 78351032.

It is an arithmetic number, because the mean of its divisors is an integer number (133709329152).

Almost surely, 2^{2777777222222} is an apocalyptic number.

It is a pronic number, being equal to 1666666×1666667.

2777777222222 is a deficient number, since it is larger than the sum of its proper divisors (1500921310642).

2777777222222 is a wasteful number, since it uses less digits than its factorization.

2777777222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40064.

The product of its digits is 15059072, while the sum is 56.

The spelling of 2777777222222 in words is "two trillion, seven hundred seventy-seven billion, seven hundred seventy-seven million, two hundred twenty-two thousand, two hundred twenty-two".