21010210022 has 8 divisors (see below), whose sum is σ = 31708661016. Its totient is φ = 10440656352.

The previous prime is 21010210009. The next prime is 21010210031. The reversal of 21010210022 is 22001201012.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 21010209985 and 21010210012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32223923 + ... + 32224574.

It is an arithmetic number, because the mean of its divisors is an integer number (3963582627).

Almost surely, 2^21010210022 is an apocalyptic number.

21010210022 is a deficient number, since it is larger than the sum of its proper divisors (10698450994).

21010210022 is a wasteful number, since it uses less digits than its factorization.

21010210022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64448662.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21010210022 its reverse (22001201012), we get a palindrome (43011411034).

The spelling of 21010210022 in words is "twenty-one billion, ten million, two hundred ten thousand, twenty-two".