21010140422 has 8 divisors (see below), whose sum is σ = 31515902496. Its totient is φ = 10504839592.

The previous prime is 21010140419. The next prime is 21010140427. The reversal of 21010140422 is 22404101012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21010140422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010140427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40883 + ... + 209025.

It is an arithmetic number, because the mean of its divisors is an integer number (3939487812).

Almost surely, 2^21010140422 is an apocalyptic number.

21010140422 is a deficient number, since it is larger than the sum of its proper divisors (10505762074).

21010140422 is a wasteful number, since it uses less digits than its factorization.

21010140422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230622.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21010140422 its reverse (22404101012), we get a palindrome (43414241434).

The spelling of 21010140422 in words is "twenty-one billion, ten million, one hundred forty thousand, four hundred twenty-two".