1121100220531 has 2 divisors, whose sum is σ = 1121100220532. Its totient is φ = 1121100220530.

The previous prime is 1121100220519. The next prime is 1121100220561. The reversal of 1121100220531 is 1350220011211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121100220531 - 2¹⁵ = 1121100187763 is a prime.

It is a super-2 number, since 2×1121100220531² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1121100220499 and 1121100220508.

It is not a weakly prime, because it can be changed into another prime (1121100220511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560550110265 + 560550110266.

It is an arithmetic number, because the mean of its divisors is an integer number (560550110266).

Almost surely, 2^{1121100220531} is an apocalyptic number.

1121100220531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121100220531 is an equidigital number, since it uses as much as digits as its factorization.

1121100220531 is an evil number, because the sum of its binary digits is even.

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

Adding to 1121100220531 its reverse (1350220011211), we get a palindrome (2471320231742).

The spelling of 1121100220531 in words is "one trillion, one hundred twenty-one billion, one hundred million, two hundred twenty thousand, five hundred thirty-one".