1220222220012 has 60 divisors (see below), whose sum is σ = 3198454247296. Its totient is φ = 405650242080.

The previous prime is 1220222219989. The next prime is 1220222220031. The reversal of 1220222220012 is 2100222220221.

1220222220012 is a `hidden beast` number, since 1 + 220 + 222 + 220 + 0 + 1 + 2 = 666.

It is a super-2 number, since 2×1220222220012² (a number of 25 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4927564 + ... + 5169267.

Almost surely, 2^{1220222220012} is an apocalyptic number.

1220222220012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1220222220012 is an abundant number, since it is smaller than the sum of its proper divisors (1978232027284).

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

1220222220012 is a wasteful number, since it uses less digits than its factorization.

1220222220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10097220 (or 10097209 counting only the distinct ones).

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

Adding to 1220222220012 its reverse (2100222220221), we get a palindrome (3320444440233).

The spelling of 1220222220012 in words is "one trillion, two hundred twenty billion, two hundred twenty-two million, two hundred twenty thousand, twelve".