611221253203 has 8 divisors (see below), whose sum is σ = 666817447536. Its totient is φ = 555630163200.

The previous prime is 611221253191. The next prime is 611221253221. The reversal of 611221253203 is 302352122116.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-611221253203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611221253233) 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, 1023526 + ... + 1506667.

It is an arithmetic number, because the mean of its divisors is an integer number (83352180942).

Almost surely, 2^611221253203 is an apocalyptic number.

611221253203 is a deficient number, since it is larger than the sum of its proper divisors (55596194333).

611221253203 is a wasteful number, since it uses less digits than its factorization.

611221253203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2552165.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 611221253203 its reverse (302352122116), we get a palindrome (913573375319).

The spelling of 611221253203 in words is "six hundred eleven billion, two hundred twenty-one million, two hundred fifty-three thousand, two hundred three".