2221050155 has 8 divisors (see below), whose sum is σ = 2730266784. Its totient is φ = 1733502400.

The previous prime is 2221050121. The next prime is 2221050179. The reversal of 2221050155 is 5510501222.

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

It is not a de Polignac number, because 2221050155 - 2²⁰ = 2220001579 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2221050155.

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, 5416991 + ... + 5417400.

It is an arithmetic number, because the mean of its divisors is an integer number (341283348).

Almost surely, 2^2221050155 is an apocalyptic number.

2221050155 is a deficient number, since it is larger than the sum of its proper divisors (509216629).

2221050155 is a wasteful number, since it uses less digits than its factorization.

2221050155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10834437.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 2221050155 is about 47128.0187892510. The cubic root of 2221050155 is about 1304.7264156406.

Adding to 2221050155 its reverse (5510501222), we get a palindrome (7731551377).

The spelling of 2221050155 in words is "two billion, two hundred twenty-one million, fifty thousand, one hundred fifty-five".