1102021201220 has 12 divisors (see below), whose sum is σ = 2314244522604. Its totient is φ = 440808480480.

The previous prime is 1102021201139. The next prime is 1102021201249. The reversal of 1102021201220 is 221021202011.

It can be written as a sum of positive squares in 2 ways, for example, as 236164897024 + 865856304196 = 485968^2 + 930514^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1102021201195 and 1102021201204.

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, 27550530011 + ... + 27550530050.

It is an arithmetic number, because the mean of its divisors is an integer number (192853710217).

Almost surely, 2^{1102021201220} is an apocalyptic number.

1102021201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1102021201220 is an abundant number, since it is smaller than the sum of its proper divisors (1212223321384).

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

1102021201220 is a wasteful number, since it uses less digits than its factorization.

1102021201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55101060070 (or 55101060068 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1102021201220 its reverse (221021202011), we get a palindrome (1323042403231).

The spelling of 1102021201220 in words is "one trillion, one hundred two billion, twenty-one million, two hundred one thousand, two hundred twenty".