2154222202 has 16 divisors (see below), whose sum is σ = 3528103392. Its totient is φ = 978355120.

The previous prime is 2154222199. The next prime is 2154222211. The reversal of 2154222202 is 2022224512.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15133 + ... + 67360.

It is an arithmetic number, because the mean of its divisors is an integer number (220506462).

Almost surely, 2^2154222202 is an apocalyptic number.

2154222202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2154222202 is a deficient number, since it is larger than the sum of its proper divisors (1373881190).

2154222202 is a wasteful number, since it uses less digits than its factorization.

2154222202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83693.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 2154222202 is about 46413.5993217505. The cubic root of 2154222202 is about 1291.5072025427.

Adding to 2154222202 its reverse (2022224512), we get a palindrome (4176446714).

The spelling of 2154222202 in words is "two billion, one hundred fifty-four million, two hundred twenty-two thousand, two hundred two".