2100212122212 has 24 divisors (see below), whose sum is σ = 5444994391200. Its totient is φ = 700070707368.

The previous prime is 2100212122153. The next prime is 2100212122219. The reversal of 2100212122212 is 2122212120012.

It is a happy number.

2100212122212 is a `hidden beast` number, since 210 + 0 + 21 + 212 + 221 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (2100212122219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9723204162 + ... + 9723204377.

It is an arithmetic number, because the mean of its divisors is an integer number (226874766300).

Almost surely, 2^{2100212122212} is an apocalyptic number.

It is an amenable number.

2100212122212 is an abundant number, since it is smaller than the sum of its proper divisors (3344782268988).

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

2100212122212 is a wasteful number, since it uses less digits than its factorization.

2100212122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19446408552 (or 19446408544 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2100212122212 its reverse (2122212120012), we get a palindrome (4222424242224).

The spelling of 2100212122212 in words is "two trillion, one hundred billion, two hundred twelve million, one hundred twenty-two thousand, two hundred twelve".