1210010011001 has 4 divisors (see below), whose sum is σ = 1320010921104. Its totient is φ = 1100009100900.

The previous prime is 1210010010977. The next prime is 1210010011043. The reversal of 1210010011001 is 1001100100121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1210010011001 - 2²² = 1210005816697 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1210010011001.

It is not an unprimeable number, because it can be changed into a prime (1210010011061) 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, 55000455035 + ... + 55000455056.

It is an arithmetic number, because the mean of its divisors is an integer number (330002730276).

Almost surely, 2^{1210010011001} is an apocalyptic number.

1210010011001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1210010011001 is a deficient number, since it is larger than the sum of its proper divisors (110000910103).

1210010011001 is a wasteful number, since it uses less digits than its factorization.

1210010011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110000910102.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 1210010011001 its reverse (1001100100121), we get a palindrome (2211110111122).

The spelling of 1210010011001 in words is "one trillion, two hundred ten billion, ten million, eleven thousand, one".