499000111021 has 2 divisors, whose sum is σ = 499000111022. Its totient is φ = 499000111020.

The previous prime is 499000110997. The next prime is 499000111063. The reversal of 499000111021 is 120111000994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 468143324100 + 30856786921 = 684210^2 + 175661^2 .

It is a cyclic number.

It is not a de Polignac number, because 499000111021 - 2⁷ = 499000110893 is a prime.

It is a super-2 number, since 2×499000111021² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499000111081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249500055510 + 249500055511.

It is an arithmetic number, because the mean of its divisors is an integer number (249500055511).

Almost surely, 2^499000111021 is an apocalyptic number.

It is an amenable number.

499000111021 is a deficient number, since it is larger than the sum of its proper divisors (1).

499000111021 is an equidigital number, since it uses as much as digits as its factorization.

499000111021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 28.

The spelling of 499000111021 in words is "four hundred ninety-nine billion, one hundred eleven thousand, twenty-one".