1011223455 has 32 divisors (see below), whose sum is σ = 1771683840. Its totient is φ = 488446080.

The previous prime is 1011223387. The next prime is 1011223469. The reversal of 1011223455 is 5543221101.

It is a happy number.

It is not a de Polignac number, because 1011223455 - 2¹² = 1011219359 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32994 + ... + 55776.

It is an arithmetic number, because the mean of its divisors is an integer number (55365120).

Almost surely, 2^1011223455 is an apocalyptic number.

1011223455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1011223455 is a deficient number, since it is larger than the sum of its proper divisors (760460385).

1011223455 is a wasteful number, since it uses less digits than its factorization.

1011223455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23071.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1011223455 is about 31799.7398574265. The cubic root of 1011223455 is about 1003.7272420732.

Adding to 1011223455 its reverse (5543221101), we get a palindrome (6554444556).

The spelling of 1011223455 in words is "one billion, eleven million, two hundred twenty-three thousand, four hundred fifty-five".