2121211020020 has 48 divisors (see below), whose sum is σ = 4483826917248. Its totient is φ = 842911090560.

The previous prime is 2121211020013. The next prime is 2121211020041. The reversal of 2121211020020 is 200201121212.

It is a super-3 number, since 3×2121211020020³ (a number of 38 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2121211019977 and 2121211020004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7393082 + ... + 7674638.

It is an arithmetic number, because the mean of its divisors is an integer number (93413060776).

Almost surely, 2^{2121211020020} is an apocalyptic number.

2121211020020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121211020020 is an abundant number, since it is smaller than the sum of its proper divisors (2362615897228).

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

2121211020020 is a wasteful number, since it uses less digits than its factorization.

2121211020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284040 (or 284038 counting only the distinct ones).

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

Adding to 2121211020020 its reverse (200201121212), we get a palindrome (2321412141232).

The spelling of 2121211020020 in words is "two trillion, one hundred twenty-one billion, two hundred eleven million, twenty thousand, twenty".