220111001531 has 2 divisors, whose sum is σ = 220111001532. Its totient is φ = 220111001530.

The previous prime is 220111001501. The next prime is 220111001557. The reversal of 220111001531 is 135100111022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220111001531 - 2¹⁴ = 220110985147 is a prime.

It is a super-2 number, since 2×220111001531² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (220111001501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110055500765 + 110055500766.

It is an arithmetic number, because the mean of its divisors is an integer number (110055500766).

Almost surely, 2^220111001531 is an apocalyptic number.

220111001531 is a deficient number, since it is larger than the sum of its proper divisors (1).

220111001531 is an equidigital number, since it uses as much as digits as its factorization.

220111001531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60, while the sum is 17.

Adding to 220111001531 its reverse (135100111022), we get a palindrome (355211112553).

The spelling of 220111001531 in words is "two hundred twenty billion, one hundred eleven million, one thousand, five hundred thirty-one".