21210001020022 has 8 divisors (see below), whose sum is σ = 32912070548400. Its totient is φ = 10239310837224.

The previous prime is 21210001020011. The next prime is 21210001020037. The reversal of 21210001020022 is 22002010001212.

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 = 21210001019984 and 21210001020011.

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, 182844836322 + ... + 182844836437.

It is an arithmetic number, because the mean of its divisors is an integer number (4114008818550).

Almost surely, 2^{21210001020022} is an apocalyptic number.

21210001020022 is a deficient number, since it is larger than the sum of its proper divisors (11702069528378).

21210001020022 is a wasteful number, since it uses less digits than its factorization.

21210001020022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365689672790.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21210001020022 its reverse (22002010001212), we get a palindrome (43212011021234).

The spelling of 21210001020022 in words is "twenty-one trillion, two hundred ten billion, one million, twenty thousand, twenty-two".