1022122220220 has 36 divisors (see below), whose sum is σ = 3100437401880. Its totient is φ = 272565925344.

The previous prime is 1022122220219. The next prime is 1022122220233. The reversal of 1022122220220 is 220222212201.

1022122220220 is a `hidden beast` number, since 1 + 0 + 221 + 2 + 2 + 220 + 220 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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 = 1022122220193 and 1022122220202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2839228210 + ... + 2839228569.

Almost surely, 2^{1022122220220} is an apocalyptic number.

1022122220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022122220220 is an abundant number, since it is smaller than the sum of its proper divisors (2078315181660).

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

1022122220220 is a wasteful number, since it uses less digits than its factorization.

1022122220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5678456794 (or 5678456789 counting only the distinct ones).

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

Adding to 1022122220220 its reverse (220222212201), we get a palindrome (1242344432421).

The spelling of 1022122220220 in words is "one trillion, twenty-two billion, one hundred twenty-two million, two hundred twenty thousand, two hundred twenty".