121021001210 has 8 divisors (see below), whose sum is σ = 217837802196. Its totient is φ = 48408400480.

The previous prime is 121021001207. The next prime is 121021001237. The reversal of 121021001210 is 12100120121.

It can be written as a sum of positive squares in 2 ways, for example, as 117814384081 + 3206617129 = 343241^2 + 56627^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 121021001191 and 121021001200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6051050051 + ... + 6051050070.

Almost surely, 2^121021001210 is an apocalyptic number.

121021001210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121021001210 is a deficient number, since it is larger than the sum of its proper divisors (96816800986).

121021001210 is a wasteful number, since it uses less digits than its factorization.

121021001210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12102100128.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121021001210 its reverse (12100120121), we get a palindrome (133121121331).

The spelling of 121021001210 in words is "one hundred twenty-one billion, twenty-one million, one thousand, two hundred ten".