1213102301220 has 144 divisors (see below), whose sum is σ = 3897223319808. Its totient is φ = 316611037440.

The previous prime is 1213102301219. The next prime is 1213102301293. The reversal of 1213102301220 is 221032013121.

1213102301220 is a `hidden beast` number, since 1 + 2 + 1 + 310 + 230 + 122 + 0 = 666.

It is a super-2 number, since 2×1213102301220² (a number of 25 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 1213102301193 and 1213102301202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2427001 + ... + 2883840.

It is an arithmetic number, because the mean of its divisors is an integer number (27064050832).

Almost surely, 2^{1213102301220} is an apocalyptic number.

1213102301220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213102301220 is an abundant number, since it is smaller than the sum of its proper divisors (2684121018588).

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

1213102301220 is a wasteful number, since it uses less digits than its factorization.

1213102301220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5310912 (or 5310898 counting only the distinct ones).

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

Adding to 1213102301220 its reverse (221032013121), we get a palindrome (1434134314341).

The spelling of 1213102301220 in words is "one trillion, two hundred thirteen billion, one hundred two million, three hundred one thousand, two hundred twenty".