121210211020210 has 128 divisors (see below), whose sum is σ = 238595878886400. Its totient is φ = 44067348864000.

The previous prime is 121210211020169. The next prime is 121210211020211. The reversal of 121210211020210 is 12020112012121.

It is not an unprimeable number, because it can be changed into a prime (121210211020211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5991300795 + ... + 5991321025.

It is an arithmetic number, because the mean of its divisors is an integer number (1864030303800).

Almost surely, 2^{121210211020210} is an apocalyptic number.

121210211020210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121210211020210 is a deficient number, since it is larger than the sum of its proper divisors (117385667866190).

121210211020210 is a wasteful number, since it uses less digits than its factorization.

121210211020210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22844.

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

Adding to 121210211020210 its reverse (12020112012121), we get a palindrome (133230323032331).

The spelling of 121210211020210 in words is "one hundred twenty-one trillion, two hundred ten billion, two hundred eleven million, twenty thousand, two hundred ten".