1211200012101 has 8 divisors (see below), whose sum is σ = 1645403790240. Its totient is φ = 792231454352.

The previous prime is 1211200012079. The next prime is 1211200012133. The reversal of 1211200012101 is 1012100021121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211200012101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211200012301) 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, 3808804911 + ... + 3808805228.

It is an arithmetic number, because the mean of its divisors is an integer number (205675473780).

Almost surely, 2^{1211200012101} is an apocalyptic number.

It is an amenable number.

1211200012101 is a deficient number, since it is larger than the sum of its proper divisors (434203778139).

1211200012101 is an equidigital number, since it uses as much as digits as its factorization.

1211200012101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7617610195.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1211200012101 its reverse (1012100021121), we get a palindrome (2223300033222).

The spelling of 1211200012101 in words is "one trillion, two hundred eleven billion, two hundred million, twelve thousand, one hundred one".