1210120202106 has 12 divisors (see below), whose sum is σ = 2621927104602. Its totient is φ = 403373400696.

The previous prime is 1210120202029. The next prime is 1210120202119. The reversal of 1210120202106 is 6012020210121.

It can be written as a sum of positive squares in only one way, i.e., 642817494081 + 567302708025 = 801759^2 + 753195^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 67228900117 = 1210120202106 / (1 + 2 + 1 + 0 + 1 + 2 + 0 + 2 + 0 + 2 + 1 + 0 + 6).

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, 33614450041 + ... + 33614450076.

Almost surely, 2^{1210120202106} is an apocalyptic number.

1210120202106 is an abundant number, since it is smaller than the sum of its proper divisors (1411806902496).

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

1210120202106 is a wasteful number, since it uses less digits than its factorization.

1210120202106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67228900125 (or 67228900122 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1210120202106 its reverse (6012020210121), we get a palindrome (7222140412227).

The spelling of 1210120202106 in words is "one trillion, two hundred ten billion, one hundred twenty million, two hundred two thousand, one hundred six".