1220222021222 has 16 divisors (see below), whose sum is σ = 1831042448352. Its totient is φ = 609874594560.

The previous prime is 1220222021147. The next prime is 1220222021237. The reversal of 1220222021222 is 2221202220221.

It is a junction number, because it is equal to n+sod(n) for n = 1220222021194 and 1220222021203.

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, 81172847 + ... + 81187877.

It is an arithmetic number, because the mean of its divisors is an integer number (114440153022).

Almost surely, 2^{1220222021222} is an apocalyptic number.

1220222021222 is a deficient number, since it is larger than the sum of its proper divisors (610820427130).

1220222021222 is a wasteful number, since it uses less digits than its factorization.

1220222021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28063.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 1220222021222 its reverse (2221202220221), we get a palindrome (3441424241443).

The spelling of 1220222021222 in words is "one trillion, two hundred twenty billion, two hundred twenty-two million, twenty-one thousand, two hundred twenty-two".