1200211023101 has 4 divisors (see below), whose sum is σ = 1200314527932. Its totient is φ = 1200107518272.

The previous prime is 1200211023073. The next prime is 1200211023107. The reversal of 1200211023101 is 1013201120021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 999498063001 + 200712960100 = 999749^2 + 448010^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200211023101 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 (1200211023107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51735020 + ... + 51758213.

It is an arithmetic number, because the mean of its divisors is an integer number (300078631983).

Almost surely, 2^{1200211023101} is an apocalyptic number.

It is an amenable number.

1200211023101 is a deficient number, since it is larger than the sum of its proper divisors (103504831).

1200211023101 is a wasteful number, since it uses less digits than its factorization.

1200211023101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103504830.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1200211023101 its reverse (1013201120021), we get a palindrome (2213412143122).

The spelling of 1200211023101 in words is "one trillion, two hundred billion, two hundred eleven million, twenty-three thousand, one hundred one".