1211200200101 has 8 divisors (see below), whose sum is σ = 1220136657240. Its totient is φ = 1202265128448.

The previous prime is 1211200200073. The next prime is 1211200200163. The reversal of 1211200200101 is 1010020021121.

It can be written as a sum of positive squares in 4 ways, for example, as 335010597601 + 876189602500 = 578801^2 + 936050^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1211200200101 - 2³⁸ = 936322293157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211200200191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1442435 + ... + 2122031.

It is an arithmetic number, because the mean of its divisors is an integer number (152517082155).

Almost surely, 2^{1211200200101} is an apocalyptic number.

It is an amenable number.

1211200200101 is a deficient number, since it is larger than the sum of its proper divisors (8936457139).

1211200200101 is a wasteful number, since it uses less digits than its factorization.

1211200200101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692743.

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

Adding to 1211200200101 its reverse (1010020021121), we get a palindrome (2221220221222).

The spelling of 1211200200101 in words is "one trillion, two hundred eleven billion, two hundred million, two hundred thousand, one hundred one".