10021121002220 has 48 divisors (see below), whose sum is σ = 22494919382208. Its totient is φ = 3740651735040.

The previous prime is 10021121002163. The next prime is 10021121002223. The reversal of 10021121002220 is 2220012112001.

It is a super-2 number, since 2×10021121002220² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10021121002195 and 10021121002204.

It is not an unprimeable number, because it can be changed into a prime (10021121002223) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 265652429 + ... + 265690148.

It is an arithmetic number, because the mean of its divisors is an integer number (468644153796).

Almost surely, 2^{10021121002220} is an apocalyptic number.

10021121002220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10021121002220 is an abundant number, since it is smaller than the sum of its proper divisors (12473798379988).

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

10021121002220 is a wasteful number, since it uses less digits than its factorization.

10021121002220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531342650 (or 531342648 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 10021121002220 its reverse (2220012112001), we get a palindrome (12241133114221).

The spelling of 10021121002220 in words is "ten trillion, twenty-one billion, one hundred twenty-one million, two thousand, two hundred twenty".