102120202121120 has 24 divisors (see below), whose sum is σ = 241258977511524. Its totient is φ = 40848080848384.

The previous prime is 102120202121111. The next prime is 102120202121173. The reversal of 102120202121120 is 21121202021201.

It can be written as a sum of positive squares in 2 ways, for example, as 84602394577936 + 17517807543184 = 9197956^2 + 4185428^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319125631469 + ... + 319125631788.

Almost surely, 2^{102120202121120} is an apocalyptic number.

102120202121120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102120202121120 is an abundant number, since it is smaller than the sum of its proper divisors (139138775390404).

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

102120202121120 is an equidigital number, since it uses as much as digits as its factorization.

102120202121120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638251263272 (or 638251263264 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 102120202121120 its reverse (21121202021201), we get a palindrome (123241404142321).

The spelling of 102120202121120 in words is "one hundred two trillion, one hundred twenty billion, two hundred two million, one hundred twenty-one thousand, one hundred twenty".