2154012022 has 16 divisors (see below), whose sum is σ = 3279751632. Its totient is φ = 1060801920.

The previous prime is 2154011983. The next prime is 2154012023. The reversal of 2154012022 is 2202104512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154012023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101413 + ... + 120799.

It is an arithmetic number, because the mean of its divisors is an integer number (204984477).

Almost surely, 2^2154012022 is an apocalyptic number.

2154012022 is a deficient number, since it is larger than the sum of its proper divisors (1125739610).

2154012022 is a wasteful number, since it uses less digits than its factorization.

2154012022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20223.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 2154012022 is about 46411.3350594443. The cubic root of 2154012022 is about 1291.4651985482.

Adding to 2154012022 its reverse (2202104512), we get a palindrome (4356116534).

The spelling of 2154012022 in words is "two billion, one hundred fifty-four million, twelve thousand, twenty-two".