1211023330 has 64 divisors (see below), whose sum is σ = 2528392320. Its totient is φ = 412992000.

The previous prime is 1211023279. The next prime is 1211023351. The reversal of 1211023330 is 333201121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 208222 + ... + 213958.

It is an arithmetic number, because the mean of its divisors is an integer number (39506130).

Almost surely, 2^1211023330 is an apocalyptic number.

1211023330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211023330 is an abundant number, since it is smaller than the sum of its proper divisors (1317368990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211023330 is a wasteful number, since it uses less digits than its factorization.

1211023330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5875.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1211023330 is about 34799.7604876815. The cubic root of 1211023330 is about 1065.9025550779.

Adding to 1211023330 its reverse (333201121), we get a palindrome (1544224451).

The spelling of 1211023330 in words is "one billion, two hundred eleven million, twenty-three thousand, three hundred thirty".