2121002210120 has 32 divisors (see below), whose sum is σ = 4772508552000. Its totient is φ = 848355803328.

The previous prime is 2121002210077. The next prime is 2121002210167. The reversal of 2121002210120 is 210122001212.

It is a junction number, because it is equal to n+sod(n) for n = 2121002210095 and 2121002210104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 641420 + ... + 2157179.

It is an arithmetic number, because the mean of its divisors is an integer number (149140892250).

Almost surely, 2^{2121002210120} is an apocalyptic number.

2121002210120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121002210120 is an abundant number, since it is smaller than the sum of its proper divisors (2651506341880).

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

2121002210120 is a wasteful number, since it uses less digits than its factorization.

2121002210120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2817557 (or 2817553 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2121002210120 its reverse (210122001212), we get a palindrome (2331124211332).

The spelling of 2121002210120 in words is "two trillion, one hundred twenty-one billion, two million, two hundred ten thousand, one hundred twenty".