2222161651 has 8 divisors (see below), whose sum is σ = 2305751840. Its totient is φ = 2139810048.

The previous prime is 2222161639. The next prime is 2222161679. The reversal of 2222161651 is 1561612222.

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

It is not a de Polignac number, because 2222161651 - 2¹³ = 2222153459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2222161351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305991 + ... + 313168.

It is an arithmetic number, because the mean of its divisors is an integer number (288218980).

Almost surely, 2^2222161651 is an apocalyptic number.

2222161651 is a deficient number, since it is larger than the sum of its proper divisors (83590189).

2222161651 is an equidigital number, since it uses as much as digits as its factorization.

2222161651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619293.

The product of its digits is 2880, while the sum is 28.

The square root of 2222161651 is about 47139.8096198956. The cubic root of 2222161651 is about 1304.9440238660.

Adding to 2222161651 its reverse (1561612222), we get a palindrome (3783773873).

The spelling of 2222161651 in words is "two billion, two hundred twenty-two million, one hundred sixty-one thousand, six hundred fifty-one".