121120220211210 has 192 divisors, whose sum is σ = 346963189996800. Its totient is φ = 29070124554240.

The previous prime is 121120220211187. The next prime is 121120220211251. The reversal of 121120220211210 is 12112022021121.

121120220211210 is a `hidden beast` number, since 1 + 2 + 1 + 1 + 20 + 220 + 211 + 210 = 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 95 ways as a sum of consecutive naturals, for example, 412729852 + ... + 413023208.

It is an arithmetic number, because the mean of its divisors is an integer number (1807099947900).

Almost surely, 2^{121120220211210} is an apocalyptic number.

121120220211210 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 121120220211210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173481594998400).

121120220211210 is an abundant number, since it is smaller than the sum of its proper divisors (225842969785590).

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

121120220211210 is a wasteful number, since it uses less digits than its factorization.

121120220211210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297533 (or 297530 counting only the distinct ones).

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

Adding to 121120220211210 its reverse (12112022021121), we get a palindrome (133232242232331).

It can be divided in two parts, 1211202 and 20211210, that added together give a palindrome (21422412).

The spelling of 121120220211210 in words is "one hundred twenty-one trillion, one hundred twenty billion, two hundred twenty million, two hundred eleven thousand, two hundred ten".