21020102122022 has 8 divisors (see below), whose sum is σ = 31910034546936. Its totient is φ = 10383423939712.

The previous prime is 21020102122009. The next prime is 21020102122039. The reversal of 21020102122022 is 22022120102012.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63313560443 + ... + 63313560774.

It is an arithmetic number, because the mean of its divisors is an integer number (3988754318367).

Almost surely, 2^{21020102122022} is an apocalyptic number.

21020102122022 is a deficient number, since it is larger than the sum of its proper divisors (10889932424914).

21020102122022 is a wasteful number, since it uses less digits than its factorization.

21020102122022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126627121302.

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

Adding to 21020102122022 its reverse (22022120102012), we get a palindrome (43042222224034).

The spelling of 21020102122022 in words is "twenty-one trillion, twenty billion, one hundred two million, one hundred twenty-two thousand, twenty-two".