121001120210 has 32 divisors (see below), whose sum is σ = 227293102080. Its totient is φ = 46291715008.

The previous prime is 121001120203. The next prime is 121001120291. The reversal of 121001120210 is 12021100121.

It is a junction number, because it is equal to n+sod(n) for n = 121001120191 and 121001120200.

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, 3515444 + ... + 3549696.

It is an arithmetic number, because the mean of its divisors is an integer number (7102909440).

Almost surely, 2^121001120210 is an apocalyptic number.

121001120210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121001120210 is a deficient number, since it is larger than the sum of its proper divisors (106291981870).

121001120210 is a wasteful number, since it uses less digits than its factorization.

121001120210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49642.

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

Adding to 121001120210 its reverse (12021100121), we get a palindrome (133022220331).

The spelling of 121001120210 in words is "one hundred twenty-one billion, one million, one hundred twenty thousand, two hundred ten".