1210011112001 has 4 divisors (see below), whose sum is σ = 1210198166100. Its totient is φ = 1209824057904.

The previous prime is 1210011111979. The next prime is 1210011112021. The reversal of 1210011112001 is 1002111100121.

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 360959438401 + 849051673600 = 600799^2 + 921440^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210011112001 - 2⁶ = 1210011111937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210011112021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93517346 + ... + 93530283.

It is an arithmetic number, because the mean of its divisors is an integer number (302549541525).

Almost surely, 2^{1210011112001} is an apocalyptic number.

It is an amenable number.

1210011112001 is a deficient number, since it is larger than the sum of its proper divisors (187054099).

1210011112001 is an equidigital number, since it uses as much as digits as its factorization.

1210011112001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187054098.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1210011112001 its reverse (1002111100121), we get a palindrome (2212122212122).

The spelling of 1210011112001 in words is "one trillion, two hundred ten billion, eleven million, one hundred twelve thousand, one".