1011200021201 has 2 divisors, whose sum is σ = 1011200021202. Its totient is φ = 1011200021200.

The previous prime is 1011200021173. The next prime is 1011200021207. The reversal of 1011200021201 is 1021200021101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 999810009025 + 11390012176 = 999905^2 + 106724^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011200021201 is a prime.

It is a super-3 number, since 3×1011200021201³ (a number of 37 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1011200021207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505600010600 + 505600010601.

It is an arithmetic number, because the mean of its divisors is an integer number (505600010601).

Almost surely, 2^{1011200021201} is an apocalyptic number.

It is an amenable number.

1011200021201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011200021201 is an equidigital number, since it uses as much as digits as its factorization.

1011200021201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1011200021201 its reverse (1021200021101), we get a palindrome (2032400042302).

The spelling of 1011200021201 in words is "one trillion, eleven billion, two hundred million, twenty-one thousand, two hundred one".