121224531412210 has 16 divisors (see below), whose sum is σ = 219542832351936. Its totient is φ = 48192329051568.

The previous prime is 121224531412157. The next prime is 121224531412301. The reversal of 121224531412210 is 12214135422121.

It is a happy number.

It is a super-2 number, since 2×121224531412210² (a number of 29 digits) contains 22 as substring.

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, 37185437454 + ... + 37185440713.

It is an arithmetic number, because the mean of its divisors is an integer number (13721427021996).

Almost surely, 2^{121224531412210} is an apocalyptic number.

121224531412210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121224531412210 is a deficient number, since it is larger than the sum of its proper divisors (98318300939726).

121224531412210 is a wasteful number, since it uses less digits than its factorization.

121224531412210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74370878337.

The product of its (nonzero) digits is 7680, while the sum is 31.

Adding to 121224531412210 its reverse (12214135422121), we get a palindrome (133438666834331).

The spelling of 121224531412210 in words is "one hundred twenty-one trillion, two hundred twenty-four billion, five hundred thirty-one million, four hundred twelve thousand, two hundred ten".