1102011201220 has 12 divisors (see below), whose sum is σ = 2314223522604. Its totient is φ = 440804480480.

The previous prime is 1102011201199. The next prime is 1102011201229. The reversal of 1102011201220 is 221021102011.

It can be written as a sum of positive squares in 2 ways, for example, as 602623058944 + 499388142276 = 776288^2 + 706674^2 .

It is a super-2 number, since 2×1102011201220² (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 1102011201220.

It is not an unprimeable number, because it can be changed into a prime (1102011201229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27550280011 + ... + 27550280050.

It is an arithmetic number, because the mean of its divisors is an integer number (192851960217).

Almost surely, 2^{1102011201220} is an apocalyptic number.

1102011201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1102011201220 is an abundant number, since it is smaller than the sum of its proper divisors (1212212321384).

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

1102011201220 is a wasteful number, since it uses less digits than its factorization.

1102011201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55100560070 (or 55100560068 counting only the distinct ones).

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

Adding to 1102011201220 its reverse (221021102011), we get a palindrome (1323032303231).

The spelling of 1102011201220 in words is "one trillion, one hundred two billion, eleven million, two hundred one thousand, two hundred twenty".