21010022106 has 32 divisors (see below), whose sum is σ = 44447667840. Its totient is φ = 6607079424.

The previous prime is 21010022063. The next prime is 21010022123. The reversal of 21010022106 is 60122001012.

It is a super-4 number, since 4×21010022106⁴ (a number of 42 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1032711 + ... + 1052858.

It is an arithmetic number, because the mean of its divisors is an integer number (1388989620).

Almost surely, 2^21010022106 is an apocalyptic number.

21010022106 is an abundant number, since it is smaller than the sum of its proper divisors (23437645734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21010022106 is a wasteful number, since it uses less digits than its factorization.

21010022106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2085670.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21010022106 its reverse (60122001012), we get a palindrome (81132023118).

The spelling of 21010022106 in words is "twenty-one billion, ten million, twenty-two thousand, one hundred six".