611133421 has 2 divisors, whose sum is σ = 611133422. Its totient is φ = 611133420.

The previous prime is 611133379. The next prime is 611133427. The reversal of 611133421 is 124331116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 556299396 + 54834025 = 23586^2 + 7405^2 .

It is a cyclic number.

It is not a de Polignac number, because 611133421 - 2¹¹ = 611131373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 611133392 and 611133401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611133427) 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 as a sum of consecutive naturals, namely, 305566710 + 305566711.

It is an arithmetic number, because the mean of its divisors is an integer number (305566711).

Almost surely, 2^611133421 is an apocalyptic number.

It is an amenable number.

611133421 is a deficient number, since it is larger than the sum of its proper divisors (1).

611133421 is an equidigital number, since it uses as much as digits as its factorization.

611133421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 22.

The square root of 611133421 is about 24721.1128592545. The cubic root of 611133421 is about 848.6175548780.

Adding to 611133421 its reverse (124331116), we get a palindrome (735464537).

The spelling of 611133421 in words is "six hundred eleven million, one hundred thirty-three thousand, four hundred twenty-one".