1211442313401 has 24 divisors (see below), whose sum is σ = 1853398950624. Its totient is φ = 759872534400.

The previous prime is 1211442313399. The next prime is 1211442313423. The reversal of 1211442313401 is 1043132441121.

It is a happy number.

1211442313401 is a `hidden beast` number, since 1 + 21 + 1 + 4 + 4 + 231 + 3 + 401 = 666.

It is not a de Polignac number, because 1211442313401 - 2¹ = 1211442313399 is a prime.

It is a super-3 number, since 3×1211442313401³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1211442317401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 821575 + ... + 1760076.

It is an arithmetic number, because the mean of its divisors is an integer number (77224956276).

Almost surely, 2^{1211442313401} is an apocalyptic number.

It is an amenable number.

1211442313401 is a deficient number, since it is larger than the sum of its proper divisors (641956637223).

1211442313401 is a wasteful number, since it uses less digits than its factorization.

1211442313401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2584741 (or 2584738 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 1211442313401 its reverse (1043132441121), we get a palindrome (2254574754522).

The spelling of 1211442313401 in words is "one trillion, two hundred eleven billion, four hundred forty-two million, three hundred thirteen thousand, four hundred one".