1102210121220 has 72 divisors (see below), whose sum is σ = 3341848942656. Its totient is φ = 271313258112.

The previous prime is 1102210121213. The next prime is 1102210121227. The reversal of 1102210121220 is 221210122011.

It is an interprime number because it is at equal distance from previous prime (1102210121213) and next prime (1102210121227).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1102210121220.

It is not an unprimeable number, because it can be changed into a prime (1102210121227) 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, 54339472 + ... + 54359751.

It is an arithmetic number, because the mean of its divisors is an integer number (46414568648).

Almost surely, 2^{1102210121220} is an apocalyptic number.

1102210121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1102210121220 is an abundant number, since it is smaller than the sum of its proper divisors (2239638821436).

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

1102210121220 is a wasteful number, since it uses less digits than its factorization.

1102210121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108699261 (or 108699246 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1102210121220 its reverse (221210122011), we get a palindrome (1323420243231).

The spelling of 1102210121220 in words is "one trillion, one hundred two billion, two hundred ten million, one hundred twenty-one thousand, two hundred twenty".