10021211200531 has 4 divisors (see below), whose sum is σ = 10548643369000. Its totient is φ = 9493779032064.

The previous prime is 10021211200513. The next prime is 10021211200543. The reversal of 10021211200531 is 13500211212001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10021211200531 - 2⁵ = 10021211200499 is a prime.

It is a super-2 number, since 2×10021211200531² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 527432168449 = 10021211200531 / (1 + 0 + 0 + 2 + 1 + 2 + 1 + 1 + 2 + 0 + 0 + 5 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10021211200499 and 10021211200508.

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 3 ways as a sum of consecutive naturals, for example, 263716084206 + ... + 263716084243.

It is an arithmetic number, because the mean of its divisors is an integer number (2637160842250).

Almost surely, 2^{10021211200531} is an apocalyptic number.

10021211200531 is a deficient number, since it is larger than the sum of its proper divisors (527432168469).

10021211200531 is an equidigital number, since it uses as much as digits as its factorization.

10021211200531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527432168468.

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

Adding to 10021211200531 its reverse (13500211212001), we get a palindrome (23521422412532).

The spelling of 10021211200531 in words is "ten trillion, twenty-one billion, two hundred eleven million, two hundred thousand, five hundred thirty-one".