1012621611 has 4 divisors (see below), whose sum is σ = 1350162152. Its totient is φ = 675081072.

The previous prime is 1012621601. The next prime is 1012621613. The reversal of 1012621611 is 1161262101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1161262101 = 3 ⋅387087367.

It is a de Polignac number, because none of the positive numbers 2^k-1012621611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012621613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168770266 + ... + 168770271.

It is an arithmetic number, because the mean of its divisors is an integer number (337540538).

Almost surely, 2^1012621611 is an apocalyptic number.

1012621611 is a deficient number, since it is larger than the sum of its proper divisors (337540541).

1012621611 is an equidigital number, since it uses as much as digits as its factorization.

1012621611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337540540.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 1012621611 is about 31821.7160285237. The cubic root of 1012621611 is about 1004.1896261856.

Adding to 1012621611 its reverse (1161262101), we get a palindrome (2173883712).

The spelling of 1012621611 in words is "one billion, twelve million, six hundred twenty-one thousand, six hundred eleven".