1201210202120 has 16 divisors (see below), whose sum is σ = 2702722954860. Its totient is φ = 480484080832.

The previous prime is 1201210202111. The next prime is 1201210202123. The reversal of 1201210202120 is 212020121021.

It can be written as a sum of positive squares in 2 ways, for example, as 1194557189764 + 6653012356 = 1092958^2 + 81566^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1201210202095 and 1201210202104.

It is not an unprimeable number, because it can be changed into a prime (1201210202123) 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, 15015127487 + ... + 15015127566.

Almost surely, 2^{1201210202120} is an apocalyptic number.

1201210202120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201210202120 is an abundant number, since it is smaller than the sum of its proper divisors (1501512752740).

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

1201210202120 is a wasteful number, since it uses less digits than its factorization.

1201210202120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30030255064 (or 30030255060 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1201210202120 its reverse (212020121021), we get a palindrome (1413230323141).

The spelling of 1201210202120 in words is "one trillion, two hundred one billion, two hundred ten million, two hundred two thousand, one hundred twenty".