1212123310 has 16 divisors (see below), whose sum is σ = 2186755056. Its totient is φ = 483753088.

The previous prime is 1212123287. The next prime is 1212123329. The reversal of 1212123310 is 133212121.

It is a super-2 number, since 2×1212123310² = 2938485837290712200, which contains 22 as substring.

It is a congruent number.

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, 132379 + ... + 141238.

It is an arithmetic number, because the mean of its divisors is an integer number (136672191).

Almost surely, 2^1212123310 is an apocalyptic number.

1212123310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212123310 is a deficient number, since it is larger than the sum of its proper divisors (974631746).

1212123310 is a wasteful number, since it uses less digits than its factorization.

1212123310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274067.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1212123310 is about 34815.5613196168. The cubic root of 1212123310 is about 1066.2251793838.

Adding to 1212123310 its reverse (133212121), we get a palindrome (1345335431).

The spelling of 1212123310 in words is "one billion, two hundred twelve million, one hundred twenty-three thousand, three hundred ten".