10011112001220 has 120 divisors (see below), whose sum is σ = 30834036213120. Its totient is φ = 2426936029760.

The previous prime is 10011112001213. The next prime is 10011112001239. The reversal of 10011112001220 is 2210021111001.

It is a super-2 number, since 2×10011112001220² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 10011112001196 and 10011112001205.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4819644 + ... + 6576563.

It is an arithmetic number, because the mean of its divisors is an integer number (256950301776).

Almost surely, 2^{10011112001220} is an apocalyptic number.

10011112001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10011112001220 is an abundant number, since it is smaller than the sum of its proper divisors (20822924211900).

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

10011112001220 is a wasteful number, since it uses less digits than its factorization.

10011112001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11396263 (or 11396228 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10011112001220 its reverse (2210021111001), we get a palindrome (12221133112221).

The spelling of 10011112001220 in words is "ten trillion, eleven billion, one hundred twelve million, one thousand, two hundred twenty".