611221220113 has 8 divisors (see below), whose sum is σ = 722626073280. Its totient is φ = 505838250960.

The previous prime is 611221220101. The next prime is 611221220131. The reversal of 611221220113 is 311022122116.

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

It is not a de Polignac number, because 611221220113 - 2²¹ = 611219122961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611221220213) 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, 1505470783 + ... + 1505471188.

It is an arithmetic number, because the mean of its divisors is an integer number (90328259160).

Almost surely, 2^611221220113 is an apocalyptic number.

It is an amenable number.

611221220113 is a deficient number, since it is larger than the sum of its proper divisors (111404853167).

611221220113 is a wasteful number, since it uses less digits than its factorization.

611221220113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3010942007.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 611221220113 its reverse (311022122116), we get a palindrome (922243342229).

The spelling of 611221220113 in words is "six hundred eleven billion, two hundred twenty-one million, two hundred twenty thousand, one hundred thirteen".