121012221000210 has 32 divisors (see below), whose sum is σ = 290453804949312. Its totient is φ = 32267206205760.

The previous prime is 121012221000199. The next prime is 121012221000259. The reversal of 121012221000210 is 12000122210121.

It is a super-2 number, since 2×121012221000210² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121012221000210.

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 15 ways as a sum of consecutive naturals, for example, 169600201 + ... + 170312220.

It is an arithmetic number, because the mean of its divisors is an integer number (9076681404666).

Almost surely, 2^{121012221000210} is an apocalyptic number.

121012221000210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121012221000210 is an abundant number, since it is smaller than the sum of its proper divisors (169441583949102).

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

121012221000210 is a wasteful number, since it uses less digits than its factorization.

121012221000210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339924298.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121012221000210 its reverse (12000122210121), we get a palindrome (133012343210331).

The spelling of 121012221000210 in words is "one hundred twenty-one trillion, twelve billion, two hundred twenty-one million, two hundred ten", and thus it is an aban number.