1011220245 has 24 divisors (see below), whose sum is σ = 2003179776. Its totient is φ = 462271968.

The previous prime is 1011220229. The next prime is 1011220271. The reversal of 1011220245 is 5420221101.

It is not a de Polignac number, because 1011220245 - 2⁴ = 1011220229 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1604797 + ... + 1605426.

It is an arithmetic number, because the mean of its divisors is an integer number (83465824).

Almost surely, 2^1011220245 is an apocalyptic number.

1011220245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1011220245 is a deficient number, since it is larger than the sum of its proper divisors (991959531).

1011220245 is a wasteful number, since it uses less digits than its factorization.

1011220245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3210241 (or 3210238 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1011220245 is about 31799.6893852754. The cubic root of 1011220245 is about 1003.7261800040.

Adding to 1011220245 its reverse (5420221101), we get a palindrome (6431441346).

The spelling of 1011220245 in words is "one billion, eleven million, two hundred twenty thousand, two hundred forty-five".