1115610605221 has 8 divisors (see below), whose sum is σ = 1274990721984. Its totient is φ = 956232281760.

The previous prime is 1115610605191. The next prime is 1115610605231. The reversal of 1115610605221 is 1225060165111.

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

It is not a de Polignac number, because 1115610605221 - 2²³ = 1115602216613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115610605231) 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, 1384026 + ... + 2036356.

It is an arithmetic number, because the mean of its divisors is an integer number (159373840248).

Almost surely, 2^{1115610605221} is an apocalyptic number.

It is an amenable number.

1115610605221 is a deficient number, since it is larger than the sum of its proper divisors (159380116763).

1115610605221 is an equidigital number, since it uses as much as digits as its factorization.

1115610605221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896651.

The product of its (nonzero) digits is 3600, while the sum is 31.

The spelling of 1115610605221 in words is "one trillion, one hundred fifteen billion, six hundred ten million, six hundred five thousand, two hundred twenty-one".