21010423010 has 8 divisors (see below), whose sum is σ = 37818761436. Its totient is φ = 8404169200.

The previous prime is 21010422997. The next prime is 21010423013. The reversal of 21010423010 is 1032401012.

It can be written as a sum of positive squares in 2 ways, for example, as 19777640689 + 1232782321 = 140633^2 + 35111^2 .

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

It is not an unprimeable number, because it can be changed into a prime (21010423013) 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, 1050521141 + ... + 1050521160.

Almost surely, 2^21010423010 is an apocalyptic number.

21010423010 is a deficient number, since it is larger than the sum of its proper divisors (16808338426).

21010423010 is a wasteful number, since it uses less digits than its factorization.

21010423010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101042308.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21010423010 its reverse (1032401012), we get a palindrome (22042824022).

The spelling of 21010423010 in words is "twenty-one billion, ten million, four hundred twenty-three thousand, ten".