2157228803 has 2 divisors, whose sum is σ = 2157228804. Its totient is φ = 2157228802.

The previous prime is 2157228781. The next prime is 2157228809. The reversal of 2157228803 is 3088227512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2157228803 - 2⁶ = 2157228739 is a prime.

It is a super-2 number, since 2×2157228803² = 9307272216985625618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2157228809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078614401 + 1078614402.

It is an arithmetic number, because the mean of its divisors is an integer number (1078614402).

Almost surely, 2^2157228803 is an apocalyptic number.

2157228803 is a deficient number, since it is larger than the sum of its proper divisors (1).

2157228803 is an equidigital number, since it uses as much as digits as its factorization.

2157228803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 2157228803 is about 46445.9772531486. The cubic root of 2157228803 is about 1292.1077660543.

The spelling of 2157228803 in words is "two billion, one hundred fifty-seven million, two hundred twenty-eight thousand, eight hundred three".