1021314020 has 24 divisors (see below), whose sum is σ = 2165998968. Its totient is φ = 404480000.

The previous prime is 1021314017. The next prime is 1021314023. The reversal of 1021314020 is 204131201.

It is an interprime number because it is at equal distance from previous prime (1021314017) and next prime (1021314023).

It can be written as a sum of positive squares in 4 ways, for example, as 188183524 + 833130496 = 13718^2 + 28864^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1021313986 and 1021314004.

It is not an unprimeable number, because it can be changed into a prime (1021314023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250781 + ... + 254820.

It is an arithmetic number, because the mean of its divisors is an integer number (90249957).

Almost surely, 2^1021314020 is an apocalyptic number.

1021314020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021314020 is an abundant number, since it is smaller than the sum of its proper divisors (1144684948).

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

1021314020 is a wasteful number, since it uses less digits than its factorization.

1021314020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505711 (or 505709 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1021314020 is about 31958.0040052566. The cubic root of 1021314020 is about 1007.0547862849.

Adding to 1021314020 its reverse (204131201), we get a palindrome (1225445221).

The spelling of 1021314020 in words is "one billion, twenty-one million, three hundred fourteen thousand, twenty".