1220220101022 has 64 divisors (see below), whose sum is σ = 2685847320576. Its totient is φ = 367255025280.

The previous prime is 1220220100937. The next prime is 1220220101029. The reversal of 1220220101022 is 2201010220221.

It is a junction number, because it is equal to n+sod(n) for n = 1220220100992 and 1220220101010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220220101029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 922483 + ... + 1814225.

It is an arithmetic number, because the mean of its divisors is an integer number (41966364384).

Almost surely, 2^{1220220101022} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220220101022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1342923660288).

1220220101022 is an abundant number, since it is smaller than the sum of its proper divisors (1465627219554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220220101022 is a wasteful number, since it uses less digits than its factorization.

1220220101022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892145.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1220220101022 its reverse (2201010220221), we get a palindrome (3421230321243).

The spelling of 1220220101022 in words is "one trillion, two hundred twenty billion, two hundred twenty million, one hundred one thousand, twenty-two".