1021100001202 has 16 divisors (see below), whose sum is σ = 1572172492824. Its totient is φ = 497208240000.

The previous prime is 1021100001139. The next prime is 1021100001211. The reversal of 1021100001202 is 2021000011201.

It can be written as a sum of positive squares in 4 ways, for example, as 522846132561 + 498253868641 = 723081^2 + 705871^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41421699 + ... + 41446342.

Almost surely, 2^{1021100001202} is an apocalyptic number.

1021100001202 is a deficient number, since it is larger than the sum of its proper divisors (551072491622).

1021100001202 is a wasteful number, since it uses less digits than its factorization.

1021100001202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82868205.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1021100001202 its reverse (2021000011201), we get a palindrome (3042100012403).

Subtracting 1021100001202 from its reverse (2021000011201), we obtain a palindrome (999900009999).

The spelling of 1021100001202 in words is "one trillion, twenty-one billion, one hundred million, one thousand, two hundred two".