121103133321220 has 12 divisors (see below), whose sum is σ = 254316579974604. Its totient is φ = 48441253328480.

The previous prime is 121103133321193. The next prime is 121103133321227. The reversal of 121103133321220 is 22123331301121.

It can be written as a sum of positive squares in 2 ways, for example, as 72962210571264 + 48140922749956 = 8541792^2 + 6938366^2 .

It is not an unprimeable number, because it can be changed into a prime (121103133321227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3027578333011 + ... + 3027578333050.

It is an arithmetic number, because the mean of its divisors is an integer number (21193048331217).

Almost surely, 2^{121103133321220} is an apocalyptic number.

121103133321220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121103133321220 is an abundant number, since it is smaller than the sum of its proper divisors (133213446653384).

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

121103133321220 is a wasteful number, since it uses less digits than its factorization.

121103133321220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6055156666070 (or 6055156666068 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 121103133321220 its reverse (22123331301121), we get a palindrome (143226464622341).

The spelling of 121103133321220 in words is "one hundred twenty-one trillion, one hundred three billion, one hundred thirty-three million, three hundred twenty-one thousand, two hundred twenty".