1222021211020 has 48 divisors (see below), whose sum is σ = 2587963327488. Its totient is φ = 484676075520.

The previous prime is 1222021210987. The next prime is 1222021211041. The reversal of 1222021211020 is 201121202221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1222021210985 and 1222021211003.

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, 4231564 + ... + 4511116.

It is an arithmetic number, because the mean of its divisors is an integer number (53915902656).

Almost surely, 2^{1222021211020} is an apocalyptic number.

1222021211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222021211020 is an abundant number, since it is smaller than the sum of its proper divisors (1365942116468).

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

1222021211020 is a wasteful number, since it uses less digits than its factorization.

1222021211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281410 (or 281408 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1222021211020 its reverse (201121202221), we get a palindrome (1423142413241).

The spelling of 1222021211020 in words is "one trillion, two hundred twenty-two billion, twenty-one million, two hundred eleven thousand, twenty".