121201220201210 has 16 divisors (see below), whose sum is σ = 219304406817792. Its totient is φ = 48226663534800.

The previous prime is 121201220201189. The next prime is 121201220201227. The reversal of 121201220201210 is 12102022102121.

It is a super-4 number, since 4×121201220201210⁴ (a number of 57 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31728066206 + ... + 31728070025.

It is an arithmetic number, because the mean of its divisors is an integer number (13706525426112).

Almost surely, 2^{121201220201210} is an apocalyptic number.

121201220201210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121201220201210 is a deficient number, since it is larger than the sum of its proper divisors (98103186616582).

121201220201210 is a wasteful number, since it uses less digits than its factorization.

121201220201210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63456136429.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121201220201210 its reverse (12102022102121), we get a palindrome (133303242303331).

The spelling of 121201220201210 in words is "one hundred twenty-one trillion, two hundred one billion, two hundred twenty million, two hundred one thousand, two hundred ten".