1211420204401 has 8 divisors (see below), whose sum is σ = 1322112422304. Its totient is φ = 1100821837920.

The previous prime is 1211420204389. The next prime is 1211420204437. The reversal of 1211420204401 is 1044020241121.

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 1211420204401 - 2⁷ = 1211420204273 is a prime.

It is a super-3 number, since 3×1211420204401³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211420204461) 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, 23435860 + ... + 23487493.

It is an arithmetic number, because the mean of its divisors is an integer number (165264052788).

Almost surely, 2^{1211420204401} is an apocalyptic number.

1211420204401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1211420204401 is a deficient number, since it is larger than the sum of its proper divisors (110692217903).

1211420204401 is a wasteful number, since it uses less digits than its factorization.

1211420204401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46925711.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 1211420204401 its reverse (1044020241121), we get a palindrome (2255440445522).

The spelling of 1211420204401 in words is "one trillion, two hundred eleven billion, four hundred twenty million, two hundred four thousand, four hundred one".