1320130212021 has 12 divisors (see below), whose sum is σ = 1972608363180. Its totient is φ = 849738986880.

The previous prime is 1320130211999. The next prime is 1320130212029. The reversal of 1320130212021 is 1202120310231.

1320130212021 is a `hidden beast` number, since 1 + 320 + 1 + 302 + 1 + 20 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 806019701796 + 514110510225 = 897786^2 + 717015^2 .

It is not a de Polignac number, because 1320130212021 - 2¹⁵ = 1320130179253 is a prime.

It is a super-2 number, since 2×1320130212021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1320130211985 and 1320130212003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320130212029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2528984820 + ... + 2528985341.

It is an arithmetic number, because the mean of its divisors is an integer number (164384030265).

Almost surely, 2^{1320130212021} is an apocalyptic number.

It is an amenable number.

1320130212021 is a deficient number, since it is larger than the sum of its proper divisors (652478151159).

1320130212021 is a wasteful number, since it uses less digits than its factorization.

1320130212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5057970196 (or 5057970193 counting only the distinct ones).

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

Adding to 1320130212021 its reverse (1202120310231), we get a palindrome (2522250522252).

The spelling of 1320130212021 in words is "one trillion, three hundred twenty billion, one hundred thirty million, two hundred twelve thousand, twenty-one".