2102101210120 has 64 divisors (see below), whose sum is σ = 5008886391600. Its totient is φ = 791230832640.

The previous prime is 2102101210093. The next prime is 2102101210123. The reversal of 2102101210120 is 210121012012.

It can be written as a sum of positive squares in 8 ways, for example, as 812064113316 + 1290037096804 = 901146^2 + 1135798^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2102101210120.

It is not an unprimeable number, because it can be changed into a prime (2102101210123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3371836 + ... + 3946324.

Almost surely, 2^{2102101210120} is an apocalyptic number.

2102101210120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102101210120 is an abundant number, since it is smaller than the sum of its proper divisors (2906785181480).

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

2102101210120 is a wasteful number, since it uses less digits than its factorization.

2102101210120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579898 (or 579894 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2102101210120 its reverse (210121012012), we get a palindrome (2312222222132).

The spelling of 2102101210120 in words is "two trillion, one hundred two billion, one hundred one million, two hundred ten thousand, one hundred twenty".