2121301211020 has 24 divisors (see below), whose sum is σ = 4461617782944. Its totient is φ = 847209010176.

The previous prime is 2121301210979. The next prime is 2121301211023. The reversal of 2121301211020 is 201121031212.

It is a junction number, because it is equal to n+sod(n) for n = 2121301210985 and 2121301211003.

It is not an unprimeable number, because it can be changed into a prime (2121301211023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81953877 + ... + 81979756.

It is an arithmetic number, because the mean of its divisors is an integer number (185900740956).

Almost surely, 2^{2121301211020} is an apocalyptic number.

2121301211020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121301211020 is an abundant number, since it is smaller than the sum of its proper divisors (2340316571924).

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

2121301211020 is a wasteful number, since it uses less digits than its factorization.

2121301211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163934289 (or 163934287 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 2121301211020 its reverse (201121031212), we get a palindrome (2322422242232).

The spelling of 2121301211020 in words is "two trillion, one hundred twenty-one billion, three hundred one million, two hundred eleven thousand, twenty".