121120221110 has 128 divisors (see below), whose sum is σ = 264384000000. Its totient is φ = 39056371200.

The previous prime is 121120221071. The next prime is 121120221119. The reversal of 121120221110 is 11122021121.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121120221119) 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, 24226391 + ... + 24231389.

It is an arithmetic number, because the mean of its divisors is an integer number (2065500000).

Almost surely, 2^121120221110 is an apocalyptic number.

121120221110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121120221110 is an abundant number, since it is smaller than the sum of its proper divisors (143263778890).

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

121120221110 is a wasteful number, since it uses less digits than its factorization.

121120221110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5286.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121120221110 its reverse (11122021121), we get a palindrome (132242242231).

The spelling of 121120221110 in words is "one hundred twenty-one billion, one hundred twenty million, two hundred twenty-one thousand, one hundred ten".