21123130022302 has 128 divisors (see below), whose sum is σ = 41861634490368. Its totient is φ = 7753734979200.

The previous prime is 21123130022299. The next prime is 21123130022321. The reversal of 21123130022302 is 20322003132112.

It is a super-3 number, since 3×21123130022302³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 62853988 + ... + 63189160.

It is an arithmetic number, because the mean of its divisors is an integer number (327044019456).

Almost surely, 2^{21123130022302} is an apocalyptic number.

21123130022302 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21123130022302 is a deficient number, since it is larger than the sum of its proper divisors (20738504468066).

21123130022302 is a wasteful number, since it uses less digits than its factorization.

21123130022302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335574.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21123130022302 its reverse (20322003132112), we get a palindrome (41445133154414).

The spelling of 21123130022302 in words is "twenty-one trillion, one hundred twenty-three billion, one hundred thirty million, twenty-two thousand, three hundred two".