1220222220102 has 24 divisors (see below), whose sum is σ = 2649948968160. Its totient is φ = 405797023440.

The previous prime is 1220222220089. The next prime is 1220222220137. The reversal of 1220222220102 is 2010222220221.

1220222220102 is a `hidden beast` number, since 1 + 220 + 222 + 220 + 1 + 0 + 2 = 666.

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

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, 78635077 + ... + 78650592.

It is an arithmetic number, because the mean of its divisors is an integer number (110414540340).

Almost surely, 2^{1220222220102} is an apocalyptic number.

1220222220102 is an abundant number, since it is smaller than the sum of its proper divisors (1429726748058).

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

1220222220102 is a wasteful number, since it uses less digits than its factorization.

1220222220102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157286108 (or 157286105 counting only the distinct ones).

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

Adding to 1220222220102 its reverse (2010222220221), we get a palindrome (3230444440323).

The spelling of 1220222220102 in words is "one trillion, two hundred twenty billion, two hundred twenty-two million, two hundred twenty thousand, one hundred two".