1211241341421 has 8 divisors (see below), whose sum is σ = 1794431616960. Its totient is φ = 807494227596.

The previous prime is 1211241341411. The next prime is 1211241341503. The reversal of 1211241341421 is 1241431421121.

1211241341421 is a `hidden beast` number, since 1 + 2 + 1 + 1 + 241 + 3 + 414 + 2 + 1 = 666.

It is not a de Polignac number, because 1211241341421 - 2⁵ = 1211241341389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 44860790423 = 1211241341421 / (1 + 2 + 1 + 1 + 2 + 4 + 1 + 3 + 4 + 1 + 4 + 2 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211241341411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22430395185 + ... + 22430395238.

It is an arithmetic number, because the mean of its divisors is an integer number (224303952120).

Almost surely, 2^{1211241341421} is an apocalyptic number.

It is an amenable number.

1211241341421 is a deficient number, since it is larger than the sum of its proper divisors (583190275539).

1211241341421 is an equidigital number, since it uses as much as digits as its factorization.

1211241341421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44860790432 (or 44860790426 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

Adding to 1211241341421 its reverse (1241431421121), we get a palindrome (2452672762542).

The spelling of 1211241341421 in words is "one trillion, two hundred eleven billion, two hundred forty-one million, three hundred forty-one thousand, four hundred twenty-one".