1101220212 has 24 divisors (see below), whose sum is σ = 2576802816. Its totient is φ = 366032128.

The previous prime is 1101220193. The next prime is 1101220247. The reversal of 1101220212 is 2120221011.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125748 + ... + 134219.

It is an arithmetic number, because the mean of its divisors is an integer number (107366784).

Almost surely, 2^1101220212 is an apocalyptic number.

1101220212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1101220212 is an abundant number, since it is smaller than the sum of its proper divisors (1475582604).

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

1101220212 is a wasteful number, since it uses less digits than its factorization.

1101220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260327 (or 260325 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1101220212 is about 33184.6381929953. The cubic root of 1101220212 is about 1032.6616715532.

Adding to 1101220212 its reverse (2120221011), we get a palindrome (3221441223).

The spelling of 1101220212 in words is "one billion, one hundred one million, two hundred twenty thousand, two hundred twelve".