10221772531 has 2 divisors, whose sum is σ = 10221772532. Its totient is φ = 10221772530.

The previous prime is 10221772499. The next prime is 10221772537. The reversal of 10221772531 is 13527712201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10221772531 - 2⁵ = 10221772499 is a prime.

It is a super-2 number, since 2×10221772531² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10221772493 and 10221772502.

It is not a weakly prime, because it can be changed into another prime (10221772537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110886265 + 5110886266.

It is an arithmetic number, because the mean of its divisors is an integer number (5110886266).

Almost surely, 2^10221772531 is an apocalyptic number.

10221772531 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221772531 is an equidigital number, since it uses as much as digits as its factorization.

10221772531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5880, while the sum is 31.

The spelling of 10221772531 in words is "ten billion, two hundred twenty-one million, seven hundred seventy-two thousand, five hundred thirty-one".