1220202021022 has 4 divisors (see below), whose sum is σ = 1830303031536. Its totient is φ = 610101010510.

The previous prime is 1220202021013. The next prime is 1220202021091. The reversal of 1220202021022 is 2201202020221.

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

It is a junction number, because it is equal to n+sod(n) for n = 1220202020987 and 1220202021005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305050505254 + ... + 305050505257.

It is an arithmetic number, because the mean of its divisors is an integer number (457575757884).

Almost surely, 2^{1220202021022} is an apocalyptic number.

1220202021022 is a deficient number, since it is larger than the sum of its proper divisors (610101010514).

1220202021022 is an equidigital number, since it uses as much as digits as its factorization.

1220202021022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610101010513.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 1220202021022 its reverse (2201202020221), we get a palindrome (3421404041243).

The spelling of 1220202021022 in words is "one trillion, two hundred twenty billion, two hundred two million, twenty-one thousand, twenty-two".