1211421133106 has 8 divisors (see below), whose sum is σ = 1817196196464. Its totient is φ = 605689067620.

The previous prime is 1211421133103. The next prime is 1211421133121. The reversal of 1211421133106 is 6013311241121.

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

It is a super-3 number, since 3×1211421133106³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1211421133103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10678940 + ... + 10791783.

It is an arithmetic number, because the mean of its divisors is an integer number (227149524558).

Almost surely, 2^{1211421133106} is an apocalyptic number.

1211421133106 is a deficient number, since it is larger than the sum of its proper divisors (605775063358).

1211421133106 is a wasteful number, since it uses less digits than its factorization.

1211421133106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21498936.

The product of its (nonzero) digits is 864, while the sum is 26.

Adding to 1211421133106 its reverse (6013311241121), we get a palindrome (7224732374227).

The spelling of 1211421133106 in words is "one trillion, two hundred eleven billion, four hundred twenty-one million, one hundred thirty-three thousand, one hundred six".