121201122102210 has 160 divisors (see below), whose sum is σ = 332680285840320. Its totient is φ = 31649844500352.

The previous prime is 121201122102163. The next prime is 121201122102233. The reversal of 121201122102210 is 12201221102121.

121201122102210 is a `hidden beast` number, since 1 + 2 + 120 + 112 + 210 + 221 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 19753321 + ... + 25151459.

It is an arithmetic number, because the mean of its divisors is an integer number (2079251786502).

Almost surely, 2^{121201122102210} is an apocalyptic number.

121201122102210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121201122102210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166340142920160).

121201122102210 is an abundant number, since it is smaller than the sum of its proper divisors (211479163738110).

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

121201122102210 is a wasteful number, since it uses less digits than its factorization.

121201122102210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5398734 (or 5398725 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121201122102210 its reverse (12201221102121), we get a palindrome (133402343204331).

The spelling of 121201122102210 in words is "one hundred twenty-one trillion, two hundred one billion, one hundred twenty-two million, one hundred two thousand, two hundred ten".