1201102020120 has 64 divisors (see below), whose sum is σ = 3700692724320. Its totient is φ = 311637279744.

The previous prime is 1201102020101. The next prime is 1201102020127. The reversal of 1201102020120 is 210202011021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1201102020096 and 1201102020105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201102020127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135254797 + ... + 135263676.

Almost surely, 2^{1201102020120} is an apocalyptic number.

1201102020120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201102020120 is an abundant number, since it is smaller than the sum of its proper divisors (2499590704200).

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

1201102020120 is a wasteful number, since it uses less digits than its factorization.

1201102020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270518524 (or 270518520 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1201102020120 its reverse (210202011021), we get a palindrome (1411304031141).

Subtracting from 1201102020120 its reverse (210202011021), we obtain a palindrome (990900009099).

The spelling of 1201102020120 in words is "one trillion, two hundred one billion, one hundred two million, twenty thousand, one hundred twenty".