121112020210 has 16 divisors (see below), whose sum is σ = 220987961496. Its totient is φ = 47781180288.

The previous prime is 121112020193. The next prime is 121112020241. The reversal of 121112020210 is 12020211121.

It can be written as a sum of positive squares in 4 ways, for example, as 89455426281 + 31656593929 = 299091^2 + 177923^2 .

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, 82952709 + ... + 82954168.

Almost surely, 2^121112020210 is an apocalyptic number.

121112020210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121112020210 is a deficient number, since it is larger than the sum of its proper divisors (99875941286).

121112020210 is a wasteful number, since it uses less digits than its factorization.

121112020210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165906957.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121112020210 its reverse (12020211121), we get a palindrome (133132231331).

The spelling of 121112020210 in words is "one hundred twenty-one billion, one hundred twelve million, twenty thousand, two hundred ten".