1211421133133 has 4 divisors (see below), whose sum is σ = 1275180140160. Its totient is φ = 1147662126108.

The previous prime is 1211421133121. The next prime is 1211421133163. The reversal of 1211421133133 is 3313311241121.

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 1211421133133 - 2¹⁴ = 1211421116749 is a prime.

It is a super-3 number, since 3×1211421133133³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211421133103) 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, 31879503485 + ... + 31879503522.

It is an arithmetic number, because the mean of its divisors is an integer number (318795035040).

Almost surely, 2^{1211421133133} is an apocalyptic number.

It is an amenable number.

1211421133133 is a deficient number, since it is larger than the sum of its proper divisors (63759007027).

1211421133133 is an equidigital number, since it uses as much as digits as its factorization.

1211421133133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63759007026.

The product of its digits is 1296, while the sum is 26.

Adding to 1211421133133 its reverse (3313311241121), we get a palindrome (4524732374254).

The spelling of 1211421133133 in words is "one trillion, two hundred eleven billion, four hundred twenty-one million, one hundred thirty-three thousand, one hundred thirty-three".