1111002201220 has 24 divisors (see below), whose sum is σ = 2470346071704. Its totient is φ = 418259652096.

The previous prime is 1111002201191. The next prime is 1111002201247. The reversal of 1111002201220 is 221022001111.

It can be written as a sum of positive squares in 4 ways, for example, as 496619002944 + 614383198276 = 704712^2 + 783826^2 .

It is a super-2 number, since 2×1111002201220² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1111002201220.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1633826427 + ... + 1633827106.

It is an arithmetic number, because the mean of its divisors is an integer number (102931086321).

Almost surely, 2^{1111002201220} is an apocalyptic number.

1111002201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111002201220 is an abundant number, since it is smaller than the sum of its proper divisors (1359343870484).

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

1111002201220 is a wasteful number, since it uses less digits than its factorization.

1111002201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3267653559 (or 3267653557 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1111002201220 its reverse (221022001111), we get a palindrome (1332024202331).

The spelling of 1111002201220 in words is "one trillion, one hundred eleven billion, two million, two hundred one thousand, two hundred twenty".