10021211201530 has 16 divisors (see below), whose sum is σ = 18038216582280. Its totient is φ = 4008476387392.

The previous prime is 10021211201447. The next prime is 10021211201531. The reversal of 10021211201530 is 3510211212001.

It can be written as a sum of positive squares in 4 ways, for example, as 9843849775081 + 177361426449 = 3137491^2 + 421143^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10021211201498 and 10021211201507.

It is not an unprimeable number, because it can be changed into a prime (10021211201531) 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, 8077536 + ... + 9235204.

Almost surely, 2^{10021211201530} is an apocalyptic number.

10021211201530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10021211201530 is a deficient number, since it is larger than the sum of its proper divisors (8017005380750).

10021211201530 is a wasteful number, since it uses less digits than its factorization.

10021211201530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2023313.

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 10021211201530 its reverse (3510211212001), we get a palindrome (13531422413531).

The spelling of 10021211201530 in words is "ten trillion, twenty-one billion, two hundred eleven million, two hundred one thousand, five hundred thirty".