21201010021122 has 32 divisors (see below), whose sum is σ = 42462568180800. Its totient is φ = 7056914439360.

The previous prime is 21201010021013. The next prime is 21201010021151. The reversal of 21201010021122 is 22112001010212.

It is a super-2 number, since 2×21201010021122² (a number of 27 digits) contains 22 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, 34709497 + ... + 35315027.

It is an arithmetic number, because the mean of its divisors is an integer number (1326955255650).

Almost surely, 2^{21201010021122} is an apocalyptic number.

21201010021122 is an abundant number, since it is smaller than the sum of its proper divisors (21261558159678).

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

21201010021122 is a wasteful number, since it uses less digits than its factorization.

21201010021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613858.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21201010021122 its reverse (22112001010212), we get a palindrome (43313011031334).

The spelling of 21201010021122 in words is "twenty-one trillion, two hundred one billion, ten million, twenty-one thousand, one hundred twenty-two".