212020312021 has 8 divisors (see below), whose sum is σ = 242317865664. Its totient is φ = 181724992800.

The previous prime is 212020311983. The next prime is 212020312027. The reversal of 212020312021 is 120213020212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212020312021 - 2⁹ = 212020311509 is a prime.

It is a super-2 number, since 2×212020312021² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212020311986 and 212020312004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212020312027) 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, 350080 + ... + 739321.

It is an arithmetic number, because the mean of its divisors is an integer number (30289733208).

Almost surely, 2^212020312021 is an apocalyptic number.

It is an amenable number.

212020312021 is a deficient number, since it is larger than the sum of its proper divisors (30297553643).

212020312021 is a wasteful number, since it uses less digits than its factorization.

212020312021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117211.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 212020312021 its reverse (120213020212), we get a palindrome (332233332233).

The spelling of 212020312021 in words is "two hundred twelve billion, twenty million, three hundred twelve thousand, twenty-one".