1200211000101 has 8 divisors (see below), whose sum is σ = 1778090370560. Its totient is φ = 800140666716.

The previous prime is 1200211000073. The next prime is 1200211000141. The reversal of 1200211000101 is 1010001120021.

It is a happy number.

It is not a de Polignac number, because 1200211000101 - 2⁷ = 1200210999973 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200211000141) 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, 22226129605 + ... + 22226129658.

It is an arithmetic number, because the mean of its divisors is an integer number (222261296320).

Almost surely, 2^{1200211000101} is an apocalyptic number.

It is an amenable number.

1200211000101 is a deficient number, since it is larger than the sum of its proper divisors (577879370459).

1200211000101 is an equidigital number, since it uses as much as digits as its factorization.

1200211000101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44452259272 (or 44452259266 counting only the distinct ones).

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

Adding to 1200211000101 its reverse (1010001120021), we get a palindrome (2210212120122).

The spelling of 1200211000101 in words is "one trillion, two hundred billion, two hundred eleven million, one hundred one", and thus it is an aban number.