102346000021 has 4 divisors (see below), whose sum is σ = 102512959852. Its totient is φ = 102179040192.

The previous prime is 102345999989. The next prime is 102346000037. The reversal of 102346000021 is 120000643201.

102346000021 = 226214² + 226215².

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

It can be written as a sum of positive squares in 2 ways, for example, as 51173226225 + 51172773796 = 226215^2 + 226214^2 .

It is a cyclic number.

It is not a de Polignac number, because 102346000021 - 2⁵ = 102345999989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102346007021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83478996 + ... + 83480221.

It is an arithmetic number, because the mean of its divisors is an integer number (25628239963).

Almost surely, 2^102346000021 is an apocalyptic number.

102346000021 is the 226215-th centered square number.

It is an amenable number.

102346000021 is a deficient number, since it is larger than the sum of its proper divisors (166959831).

102346000021 is an equidigital number, since it uses as much as digits as its factorization.

102346000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166959830.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 102346000021 its reverse (120000643201), we get a palindrome (222346643222).

The spelling of 102346000021 in words is "one hundred two billion, three hundred forty-six million, twenty-one", and thus it is an aban number.