123021221210 has 16 divisors (see below), whose sum is σ = 224743247136. Its totient is φ = 48474033168.

The previous prime is 123021221209. The next prime is 123021221237. The reversal of 123021221210 is 12122120321.

It is an unprimeable number.

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, 91806212 + ... + 91807551.

It is an arithmetic number, because the mean of its divisors is an integer number (14046452946).

Almost surely, 2^123021221210 is an apocalyptic number.

123021221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123021221210 is a deficient number, since it is larger than the sum of its proper divisors (101722025926).

123021221210 is a wasteful number, since it uses less digits than its factorization.

123021221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183613837.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 123021221210 its reverse (12122120321), we get a palindrome (135143341531).

The spelling of 123021221210 in words is "one hundred twenty-three billion, twenty-one million, two hundred twenty-one thousand, two hundred ten".