1220021222 has 16 divisors (see below), whose sum is σ = 2096934912. Its totient is φ = 521498760.

The previous prime is 1220021203. The next prime is 1220021249. The reversal of 1220021222 is 2221200221.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1220021197 and 1220021206.

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, 108404 + ... + 119127.

It is an arithmetic number, because the mean of its divisors is an integer number (131058432).

Almost surely, 2^1220021222 is an apocalyptic number.

1220021222 is a deficient number, since it is larger than the sum of its proper divisors (876913690).

1220021222 is a wasteful number, since it uses less digits than its factorization.

1220021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227923.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1220021222 is about 34928.8021838711. The cubic root of 1220021222 is about 1068.5359258337.

Adding to 1220021222 its reverse (2221200221), we get a palindrome (3441221443).

The spelling of 1220021222 in words is "one billion, two hundred twenty million, twenty-one thousand, two hundred twenty-two".