1220222021022 has 32 divisors (see below), whose sum is σ = 2712135440160. Its totient is φ = 406661031360.

The previous prime is 1220222021003. The next prime is 1220222021077. The reversal of 1220222021022 is 2201202220221.

1220222021022 is a `hidden beast` number, since 12 + 202 + 220 + 210 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1220222020986 and 1220222021004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1933629 + ... + 2485832.

It is an arithmetic number, because the mean of its divisors is an integer number (84754232505).

Almost surely, 2^{1220222021022} is an apocalyptic number.

1220222021022 is an abundant number, since it is smaller than the sum of its proper divisors (1491913419138).

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

1220222021022 is a wasteful number, since it uses less digits than its factorization.

1220222021022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4424585 (or 4424579 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 1220222021022 its reverse (2201202220221), we get a palindrome (3421424241243).

The spelling of 1220222021022 in words is "one trillion, two hundred twenty billion, two hundred twenty-two million, twenty-one thousand, twenty-two".