2100002202120 has 128 divisors (see below), whose sum is σ = 6509374202880. Its totient is φ = 541424256000.

The previous prime is 2100002202119. The next prime is 2100002202121. The reversal of 2100002202120 is 212022000012.

It is an interprime number because it is at equal distance from previous prime (2100002202119) and next prime (2100002202121).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2100002202096 and 2100002202105.

It is not an unprimeable number, because it can be changed into a prime (2100002202121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3680890 + ... + 4212950.

It is an arithmetic number, because the mean of its divisors is an integer number (50854485960).

Almost surely, 2^{2100002202120} is an apocalyptic number.

2100002202120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2100002202120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3254687101440).

2100002202120 is an abundant number, since it is smaller than the sum of its proper divisors (4409372000760).

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

2100002202120 is a wasteful number, since it uses less digits than its factorization.

2100002202120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533167 (or 533163 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 2100002202120 its reverse (212022000012), we get a palindrome (2312024202132).

The spelling of 2100002202120 in words is "two trillion, one hundred billion, two million, two hundred two thousand, one hundred twenty".