121231223333210 has 32 divisors (see below), whose sum is σ = 225742400029440. Its totient is φ = 46820023125568.

The previous prime is 121231223333183. The next prime is 121231223333251. The reversal of 121231223333210 is 12333322132121.

It is a super-3 number, since 3×121231223333210³ (a number of 43 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

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 15 ways as a sum of consecutive naturals, for example, 44945429 + ... + 47566311.

It is an arithmetic number, because the mean of its divisors is an integer number (7054450000920).

Almost surely, 2^{121231223333210} is an apocalyptic number.

121231223333210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121231223333210 is a deficient number, since it is larger than the sum of its proper divisors (104511176696230).

121231223333210 is a wasteful number, since it uses less digits than its factorization.

121231223333210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2780422.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 121231223333210 its reverse (12333322132121), we get a palindrome (133564545465331).

The spelling of 121231223333210 in words is "one hundred twenty-one trillion, two hundred thirty-one billion, two hundred twenty-three million, three hundred thirty-three thousand, two hundred ten".