1220120221302 has 64 divisors (see below), whose sum is σ = 2829568896000. Its totient is φ = 388981954944.

The previous prime is 1220120221283. The next prime is 1220120221337. The reversal of 1220120221302 is 2031220210221.

1220120221302 is a `hidden beast` number, since 1 + 2 + 20 + 120 + 221 + 302 = 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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12731199 + ... + 12826677.

It is an arithmetic number, because the mean of its divisors is an integer number (44212014000).

Almost surely, 2^{1220120221302} is an apocalyptic number.

1220120221302 is an abundant number, since it is smaller than the sum of its proper divisors (1609448674698).

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

1220120221302 is a wasteful number, since it uses less digits than its factorization.

1220120221302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105802 (or 105796 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1220120221302 its reverse (2031220210221), we get a palindrome (3251340431523).

The spelling of 1220120221302 in words is "one trillion, two hundred twenty billion, one hundred twenty million, two hundred twenty-one thousand, three hundred two".