1102203221220 has 72 divisors (see below), whose sum is σ = 3451199781120. Its totient is φ = 284439539520.

The previous prime is 1102203221153. The next prime is 1102203221227. The reversal of 1102203221220 is 221223022011.

1102203221220 is a `hidden beast` number, since 1 + 1 + 0 + 220 + 3 + 221 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1102203221193 and 1102203221202.

It is not an unprimeable number, because it can be changed into a prime (1102203221227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98758150 + ... + 98769309.

Almost surely, 2^{1102203221220} is an apocalyptic number.

1102203221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1102203221220 is an abundant number, since it is smaller than the sum of its proper divisors (2348996559900).

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

1102203221220 is a wasteful number, since it uses less digits than its factorization.

1102203221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197527505 (or 197527500 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1102203221220 its reverse (221223022011), we get a palindrome (1323426243231).

The spelling of 1102203221220 in words is "one trillion, one hundred two billion, two hundred three million, two hundred twenty-one thousand, two hundred twenty".