21013041022 has 4 divisors (see below), whose sum is σ = 31519561536. Its totient is φ = 10506520510.

The previous prime is 21013040981. The next prime is 21013041053. The reversal of 21013041022 is 22014031012.

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

It is a junction number, because it is equal to n+sod(n) for n = 21013040987 and 21013041005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5253260254 + ... + 5253260257.

It is an arithmetic number, because the mean of its divisors is an integer number (7879890384).

Almost surely, 2^21013041022 is an apocalyptic number.

21013041022 is a deficient number, since it is larger than the sum of its proper divisors (10506520514).

21013041022 is a wasteful number, since it uses less digits than its factorization.

21013041022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10506520513.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21013041022 its reverse (22014031012), we get a palindrome (43027072034).

It can be divided in two parts, 210130 and 41022, that added together give a palindrome (251152).

The spelling of 21013041022 in words is "twenty-one billion, thirteen million, forty-one thousand, twenty-two".