611121213 has 16 divisors (see below), whose sum is σ = 924629760. Its totient is φ = 398744928.

The previous prime is 611121167. The next prime is 611121221. The reversal of 611121213 is 312121116.

It is not a de Polignac number, because 611121213 - 2⁸ = 611120957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611121913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239520 + ... + 242057.

It is an arithmetic number, because the mean of its divisors is an integer number (57789360).

Almost surely, 2^611121213 is an apocalyptic number.

It is an amenable number.

611121213 is a deficient number, since it is larger than the sum of its proper divisors (313508547).

611121213 is a wasteful number, since it uses less digits than its factorization.

611121213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481633 (or 481627 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 611121213 is about 24720.8659435708. The cubic root of 611121213 is about 848.6119041795.

Adding to 611121213 its reverse (312121116), we get a palindrome (923242329).

The spelling of 611121213 in words is "six hundred eleven million, one hundred twenty-one thousand, two hundred thirteen".