10021311730 has 16 divisors (see below), whose sum is σ = 18039751704. Its totient is φ = 4008215680.

The previous prime is 10021311701. The next prime is 10021311737. The reversal of 10021311730 is 3711312001.

It can be written as a sum of positive squares in 4 ways, for example, as 7517410209 + 2503901521 = 86703^2 + 50039^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10021311698 and 10021311707.

It is not an unprimeable number, because it can be changed into a prime (10021311737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134550 + ... + 195310.

Almost surely, 2^10021311730 is an apocalyptic number.

10021311730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10021311730 is a deficient number, since it is larger than the sum of its proper divisors (8018439974).

10021311730 is a wasteful number, since it uses less digits than its factorization.

10021311730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77261.

The product of its (nonzero) digits is 126, while the sum is 19.

Adding to 10021311730 its reverse (3711312001), we get a palindrome (13732623731).

The spelling of 10021311730 in words is "ten billion, twenty-one million, three hundred eleven thousand, seven hundred thirty".