1220222020202 has 4 divisors (see below), whose sum is σ = 1830333030306. Its totient is φ = 610111010100.

The previous prime is 1220222020187. The next prime is 1220222020207. The reversal of 1220222020202 is 2020202220221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 637089716041 + 583132304161 = 798179^2 + 763631^2 .

It is a super-2 number, since 2×1220222020202² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1220222020207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305055505049 + ... + 305055505052.

Almost surely, 2^{1220222020202} is an apocalyptic number.

1220222020202 is a deficient number, since it is larger than the sum of its proper divisors (610111010104).

1220222020202 is an equidigital number, since it uses as much as digits as its factorization.

1220222020202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610111010103.

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 1220222020202 its reverse (2020202220221), we get a palindrome (3240424240423).

The spelling of 1220222020202 in words is "one trillion, two hundred twenty billion, two hundred twenty-two million, twenty thousand, two hundred two".