2021212022120 has 32 divisors (see below), whose sum is σ = 4704545226600. Its totient is φ = 780606021888.

The previous prime is 2021212022111. The next prime is 2021212022131. The reversal of 2021212022120 is 212202121202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1284083314276 + 737128707844 = 1133174^2 + 858562^2 .

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, 871210919 + ... + 871213238.

Almost surely, 2^{2021212022120} is an apocalyptic number.

2021212022120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021212022120 is an abundant number, since it is smaller than the sum of its proper divisors (2683333204480).

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

2021212022120 is a wasteful number, since it uses less digits than its factorization.

2021212022120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1742424197 (or 1742424193 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2021212022120 its reverse (212202121202), we get a palindrome (2233414143322).

The spelling of 2021212022120 in words is "two trillion, twenty-one billion, two hundred twelve million, twenty-two thousand, one hundred twenty".