611221115121 has 8 divisors (see below), whose sum is σ = 822173535840. Its totient is φ = 403874718912.

The previous prime is 611221115101. The next prime is 611221115129. The reversal of 611221115121 is 121511122116.

611221115121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 611221115121 - 2¹³ = 611221106929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 611221115091 and 611221115100.

It is not an unprimeable number, because it can be changed into a prime (611221115129) 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, 901505731 + ... + 901506408.

It is an arithmetic number, because the mean of its divisors is an integer number (102771691980).

Almost surely, 2^611221115121 is an apocalyptic number.

It is an amenable number.

611221115121 is a deficient number, since it is larger than the sum of its proper divisors (210952420719).

611221115121 is a wasteful number, since it uses less digits than its factorization.

611221115121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803012255.

The product of its digits is 240, while the sum is 24.

Adding to 611221115121 its reverse (121511122116), we get a palindrome (732732237237).

The spelling of 611221115121 in words is "six hundred eleven billion, two hundred twenty-one million, one hundred fifteen thousand, one hundred twenty-one".