1220021130213 has 6 divisors (see below), whose sum is σ = 1762252743654. Its totient is φ = 813347420136.

The previous prime is 1220021130157. The next prime is 1220021130233. The reversal of 1220021130213 is 3120311200221.

1220021130213 is a `hidden beast` number, since 12 + 200 + 211 + 30 + 213 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1214091052164 + 5930078049 = 1101858^2 + 77007^2 .

It is not a de Polignac number, because 1220021130213 - 2²¹ = 1220019033061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220021130233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67778951670 + ... + 67778951687.

It is an arithmetic number, because the mean of its divisors is an integer number (293708790609).

Almost surely, 2^{1220021130213} is an apocalyptic number.

It is an amenable number.

1220021130213 is a deficient number, since it is larger than the sum of its proper divisors (542231613441).

1220021130213 is a wasteful number, since it uses less digits than its factorization.

1220021130213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135557903363 (or 135557903360 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1220021130213 its reverse (3120311200221), we get a palindrome (4340332330434).

The spelling of 1220021130213 in words is "one trillion, two hundred twenty billion, twenty-one million, one hundred thirty thousand, two hundred thirteen".