2100001021202 has 24 divisors (see below), whose sum is σ = 3664704409740. Its totient is φ = 899898037920.

The previous prime is 2100001021199. The next prime is 2100001021207. The reversal of 2100001021202 is 2021201000012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1925986064401 + 174014956801 = 1387799^2 + 417151^2 .

It is not an unprimeable number, because it can be changed into a prime (2100001021207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 350177 + ... + 2079092.

Almost surely, 2^{2100001021202} is an apocalyptic number.

2100001021202 is a deficient number, since it is larger than the sum of its proper divisors (1564703388538).

2100001021202 is a wasteful number, since it uses less digits than its factorization.

2100001021202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2438106 (or 2438099 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2100001021202 its reverse (2021201000012), we get a palindrome (4121202021214).

The spelling of 2100001021202 in words is "two trillion, one hundred billion, one million, twenty-one thousand, two hundred two".