10221110011220 has 12 divisors (see below), whose sum is σ = 21464331023604. Its totient is φ = 4088444004480.

The previous prime is 10221110011219. The next prime is 10221110011241. The reversal of 10221110011220 is 2211001112201.

It can be written as a sum of positive squares in 2 ways, for example, as 1043433648196 + 9177676363024 = 1021486^2 + 3029468^2 .

It is a super-2 number, since 2×10221110011220² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10221110011195 and 10221110011204.

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, 255527750261 + ... + 255527750300.

It is an arithmetic number, because the mean of its divisors is an integer number (1788694251967).

Almost surely, 2^{10221110011220} is an apocalyptic number.

10221110011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10221110011220 is an abundant number, since it is smaller than the sum of its proper divisors (11243221012384).

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

10221110011220 is a wasteful number, since it uses less digits than its factorization.

10221110011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511055500570 (or 511055500568 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10221110011220 its reverse (2211001112201), we get a palindrome (12432111123421).

The spelling of 10221110011220 in words is "ten trillion, two hundred twenty-one billion, one hundred ten million, eleven thousand, two hundred twenty".