2130121301220 has 72 divisors (see below), whose sum is σ = 7048765039680. Its totient is φ = 516393042240.

The previous prime is 2130121301201. The next prime is 2130121301233. The reversal of 2130121301220 is 221031210312.

2130121301220 is a `hidden beast` number, since 2 + 130 + 12 + 1 + 301 + 220 = 666.

It is a super-2 number, since 2×2130121301220² (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 = 2130121301193 and 2130121301202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 537907440 + ... + 537911399.

It is an arithmetic number, because the mean of its divisors is an integer number (97899514440).

Almost surely, 2^{2130121301220} is an apocalyptic number.

2130121301220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2130121301220 is an abundant number, since it is smaller than the sum of its proper divisors (4918643738460).

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

2130121301220 is a wasteful number, since it uses less digits than its factorization.

2130121301220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075818865 (or 1075818860 counting only the distinct ones).

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

Adding to 2130121301220 its reverse (221031210312), we get a palindrome (2351152511532).

The spelling of 2130121301220 in words is "two trillion, one hundred thirty billion, one hundred twenty-one million, three hundred one thousand, two hundred twenty".