2154742222222 has 8 divisors (see below), whose sum is σ = 3233991382272. Its totient is φ = 1076745094800.

The previous prime is 2154742222219. The next prime is 2154742222229. The reversal of 2154742222222 is 2222222474512.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

2154742222222 is a modest number, since divided by 2222222 gives 215474 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154742222229) 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, 313003854 + ... + 313010737.

It is an arithmetic number, because the mean of its divisors is an integer number (404248922784).

Almost surely, 2^{2154742222222} is an apocalyptic number.

2154742222222 is a deficient number, since it is larger than the sum of its proper divisors (1079249160050).

2154742222222 is a wasteful number, since it uses less digits than its factorization.

2154742222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626016314.

The product of its digits is 143360, while the sum is 37.

Adding to 2154742222222 its reverse (2222222474512), we get a palindrome (4376964696734).

The spelling of 2154742222222 in words is "two trillion, one hundred fifty-four billion, seven hundred forty-two million, two hundred twenty-two thousand, two hundred twenty-two".