1011030021220 has 48 divisors (see below), whose sum is σ = 2311974302400. Its totient is φ = 369915880320.

The previous prime is 1011030021187. The next prime is 1011030021229. The reversal of 1011030021220 is 221200301101.

1011030021220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×1011030021220³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1011030021220.

It is not an unprimeable number, because it can be changed into a prime (1011030021229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45861486 + ... + 45883525.

It is an arithmetic number, because the mean of its divisors is an integer number (48166131300).

Almost surely, 2^{1011030021220} is an apocalyptic number.

1011030021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011030021220 is an abundant number, since it is smaller than the sum of its proper divisors (1300944281180).

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

1011030021220 is a wasteful number, since it uses less digits than its factorization.

1011030021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91745068 (or 91745066 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1011030021220 its reverse (221200301101), we get a palindrome (1232230322321).

The spelling of 1011030021220 in words is "one trillion, eleven billion, thirty million, twenty-one thousand, two hundred twenty".