121000012210 has 128 divisors (see below), whose sum is σ = 279212064768. Its totient is φ = 36656064000.

The previous prime is 121000012201. The next prime is 121000012213. The reversal of 121000012210 is 12210000121.

121000012210 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (121000012213) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 8548399 + ... + 8562541.

It is an arithmetic number, because the mean of its divisors is an integer number (2181344256).

Almost surely, 2^121000012210 is an apocalyptic number.

121000012210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121000012210 is an abundant number, since it is smaller than the sum of its proper divisors (158212052558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121000012210 is a wasteful number, since it uses less digits than its factorization.

121000012210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14480.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 121000012210 its reverse (12210000121), we get a palindrome (133210012331).

The spelling of 121000012210 in words is "one hundred twenty-one billion, twelve thousand, two hundred ten".