1220021414120 has 16 divisors (see below), whose sum is σ = 2745048181860. Its totient is φ = 488008565632.

The previous prime is 1220021414119. The next prime is 1220021414123. The reversal of 1220021414120 is 214141200221.

It can be written as a sum of positive squares in 2 ways, for example, as 1219341560644 + 679853476 = 1104238^2 + 26074^2 .

It is a super-2 number, since 2×1220021414120² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1220021414092 and 1220021414101.

It is not an unprimeable number, because it can be changed into a prime (1220021414123) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 15250267637 + ... + 15250267716.

Almost surely, 2^{1220021414120} is an apocalyptic number.

1220021414120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220021414120 is an abundant number, since it is smaller than the sum of its proper divisors (1525026767740).

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

1220021414120 is a wasteful number, since it uses less digits than its factorization.

1220021414120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30500535364 (or 30500535360 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1220021414120 its reverse (214141200221), we get a palindrome (1434162614341).

The spelling of 1220021414120 in words is "one trillion, two hundred twenty billion, twenty-one million, four hundred fourteen thousand, one hundred twenty".