1012216345 has 32 divisors (see below), whose sum is σ = 1426537728. Its totient is φ = 675053568.

The previous prime is 1012216333. The next prime is 1012216349. The reversal of 1012216345 is 5436122101.

It is a happy number.

It is not a de Polignac number, because 1012216345 - 2²⁵ = 978661913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1012216349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 385477 + ... + 388093.

It is an arithmetic number, because the mean of its divisors is an integer number (44579304).

Almost surely, 2^1012216345 is an apocalyptic number.

It is an amenable number.

1012216345 is a deficient number, since it is larger than the sum of its proper divisors (414321383).

1012216345 is a wasteful number, since it uses less digits than its factorization.

1012216345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2929.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1012216345 is about 31815.3476328642. The cubic root of 1012216345 is about 1004.0556445115.

Adding to 1012216345 its reverse (5436122101), we get a palindrome (6448338446).

The spelling of 1012216345 in words is "one billion, twelve million, two hundred sixteen thousand, three hundred forty-five".