1211013213001 has 8 divisors (see below), whose sum is σ = 1282280081544. Its totient is φ = 1139749766400.

The previous prime is 1211013212999. The next prime is 1211013213041. The reversal of 1211013213001 is 1003123101121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 915751388601 + 295261824400 = 956949^2 + 543380^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1211013213001 - 2¹ = 1211013212999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211013213041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108210 + ... + 1560043.

It is an arithmetic number, because the mean of its divisors is an integer number (160285010193).

Almost surely, 2^{1211013213001} is an apocalyptic number.

It is an amenable number.

1211013213001 is a deficient number, since it is larger than the sum of its proper divisors (71266868543).

1211013213001 is a wasteful number, since it uses less digits than its factorization.

1211013213001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710971.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1211013213001 its reverse (1003123101121), we get a palindrome (2214136314122).

The spelling of 1211013213001 in words is "one trillion, two hundred eleven billion, thirteen million, two hundred thirteen thousand, one".