21130041402 has 32 divisors (see below), whose sum is σ = 46992571200. Its totient is φ = 7037808624.

The previous prime is 21130041389. The next prime is 21130041467. The reversal of 21130041402 is 20414003112.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84252 + ... + 222167.

It is an arithmetic number, because the mean of its divisors is an integer number (1468517850).

Almost surely, 2^21130041402 is an apocalyptic number.

21130041402 is an abundant number, since it is smaller than the sum of its proper divisors (25862529798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21130041402 is a wasteful number, since it uses less digits than its factorization.

21130041402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307707 (or 307701 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 21130041402 its reverse (20414003112), we get a palindrome (41544044514).

The spelling of 21130041402 in words is "twenty-one billion, one hundred thirty million, forty-one thousand, four hundred two".