1220021222110 has 16 divisors (see below), whose sum is σ = 2205627890400. Its totient is φ = 485877446496.

The previous prime is 1220021222099. The next prime is 1220021222153. The reversal of 1220021222110 is 112221200221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266377890 + ... + 266382469.

It is an arithmetic number, because the mean of its divisors is an integer number (137851743150).

Almost surely, 2^{1220021222110} is an apocalyptic number.

1220021222110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220021222110 is a deficient number, since it is larger than the sum of its proper divisors (985606668290).

1220021222110 is a wasteful number, since it uses less digits than its factorization.

1220021222110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532760595.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1220021222110 its reverse (112221200221), we get a palindrome (1332242422331).

The spelling of 1220021222110 in words is "one trillion, two hundred twenty billion, twenty-one million, two hundred twenty-two thousand, one hundred ten".