12120221110100 has 18 divisors (see below), whose sum is σ = 26300879809134. Its totient is φ = 4848088444000.

The previous prime is 12120221110091. The next prime is 12120221110111. The reversal of 12120221110100 is 101112202121.

It can be written as a sum of positive squares in 3 ways, for example, as 259608592324 + 11860612517776 = 509518^2 + 3443924^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60601105451 + ... + 60601105650.

Almost surely, 2^{12120221110100} is an apocalyptic number.

12120221110100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12120221110100 is an abundant number, since it is smaller than the sum of its proper divisors (14180658699034).

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

12120221110100 is a wasteful number, since it uses less digits than its factorization.

12120221110100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121202211115 (or 121202211108 counting only the distinct ones).

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

Adding to 12120221110100 its reverse (101112202121), we get a palindrome (12221333312221).

The spelling of 12120221110100 in words is "twelve trillion, one hundred twenty billion, two hundred twenty-one million, one hundred ten thousand, one hundred".