2101212102150 has 240 divisors, whose sum is σ = 6766275859200. Its totient is φ = 473512132800.

The previous prime is 2101212102139. The next prime is 2101212102151. The reversal of 2101212102150 is 512012121012.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101212102151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1490901 + ... + 2534799.

It is an arithmetic number, because the mean of its divisors is an integer number (28192816080).

Almost surely, 2^{2101212102150} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2101212102150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3383137929600).

2101212102150 is an abundant number, since it is smaller than the sum of its proper divisors (4665063757050).

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

2101212102150 is a wasteful number, since it uses less digits than its factorization.

2101212102150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044001 (or 1043987 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

Adding to 2101212102150 its reverse (512012121012), we get a palindrome (2613224223162).

The spelling of 2101212102150 in words is "two trillion, one hundred one billion, two hundred twelve million, one hundred two thousand, one hundred fifty".