1011020100201 has 12 divisors (see below), whose sum is σ = 1499831620612. Its totient is φ = 655796821536.

The previous prime is 1011020100193. The next prime is 1011020100221. The reversal of 1011020100201 is 1020010201101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 941916834576 + 69103265625 = 970524^2 + 262875^2 .

It is not a de Polignac number, because 1011020100201 - 2³ = 1011020100193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011020100221) 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, 1518047866 + ... + 1518048531.

Almost surely, 2^{1011020100201} is an apocalyptic number.

It is an amenable number.

1011020100201 is a deficient number, since it is larger than the sum of its proper divisors (488811520411).

1011020100201 is a wasteful number, since it uses less digits than its factorization.

1011020100201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3036096440 (or 3036096437 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1011020100201 its reverse (1020010201101), we get a palindrome (2031030301302).

The spelling of 1011020100201 in words is "one trillion, eleven billion, twenty million, one hundred thousand, two hundred one".