121112201010 has 128 divisors (see below), whose sum is σ = 311884038144. Its totient is φ = 30020855040.

The previous prime is 121112201009. The next prime is 121112201071. The reversal of 121112201010 is 10102211121.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25297837 + ... + 25302623.

It is an arithmetic number, because the mean of its divisors is an integer number (2436594048).

Almost surely, 2^121112201010 is an apocalyptic number.

121112201010 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 121112201010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155942019072).

121112201010 is an abundant number, since it is smaller than the sum of its proper divisors (190771837134).

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

121112201010 is a wasteful number, since it uses less digits than its factorization.

121112201010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5848.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121112201010 its reverse (10102211121), we get a palindrome (131214412131).

The spelling of 121112201010 in words is "one hundred twenty-one billion, one hundred twelve million, two hundred one thousand, ten".