1211057230 has 16 divisors (see below), whose sum is σ = 2181976704. Its totient is φ = 483962080.

The previous prime is 1211057213. The next prime is 1211057279. The reversal of 1211057230 is 327501121.

It is a happy number.

It is a super-2 number, since 2×1211057230² = 2933319228670545800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46462 + ... + 67681.

It is an arithmetic number, because the mean of its divisors is an integer number (136373544).

Almost surely, 2^1211057230 is an apocalyptic number.

1211057230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211057230 is a deficient number, since it is larger than the sum of its proper divisors (970919474).

1211057230 is a wasteful number, since it uses less digits than its factorization.

1211057230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115211.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 1211057230 is about 34800.2475565907. The cubic root of 1211057230 is about 1065.9125008702.

Adding to 1211057230 its reverse (327501121), we get a palindrome (1538558351).

The spelling of 1211057230 in words is "one billion, two hundred eleven million, fifty-seven thousand, two hundred thirty".