121200012121210 has 32 divisors (see below), whose sum is σ = 241894271597184. Its totient is φ = 43350227880000.

The previous prime is 121200012121183. The next prime is 121200012121261. The reversal of 121200012121210 is 12121210002121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9031290766 + ... + 9031304185.

It is an arithmetic number, because the mean of its divisors is an integer number (7559195987412).

Almost surely, 2^{121200012121210} is an apocalyptic number.

121200012121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121200012121210 is a deficient number, since it is larger than the sum of its proper divisors (120694259475974).

121200012121210 is a wasteful number, since it uses less digits than its factorization.

121200012121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18062595030.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121200012121210 its reverse (12121210002121), we get a palindrome (133321222123331).

The spelling of 121200012121210 in words is "one hundred twenty-one trillion, two hundred billion, twelve million, one hundred twenty-one thousand, two hundred ten".