1011216426 has 32 divisors (see below), whose sum is σ = 2208178368. Its totient is φ = 306167040.

The previous prime is 1011216419. The next prime is 1011216431. The reversal of 1011216426 is 6246121101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1011216396 and 1011216405.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79696 + ... + 91508.

It is an arithmetic number, because the mean of its divisors is an integer number (69005574).

Almost surely, 2^1011216426 is an apocalyptic number.

1011216426 is an abundant number, since it is smaller than the sum of its proper divisors (1196961942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1011216426 is a wasteful number, since it uses less digits than its factorization.

1011216426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13126.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1011216426 is about 31799.6293374624. The cubic root of 1011216426 is about 1003.7249164365.

Adding to 1011216426 its reverse (6246121101), we get a palindrome (7257337527).

The spelling of 1011216426 in words is "one billion, eleven million, two hundred sixteen thousand, four hundred twenty-six".