212020211020021 has 8 divisors (see below), whose sum is σ = 212303512715904. Its totient is φ = 211736911944000.

The previous prime is 212020211019973. The next prime is 212020211020039. The reversal of 212020211020021 is 120020112020212.

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 212020211020021 - 2¹⁹ = 212020210495733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212020211019977 and 212020211020004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212020211020081) 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, 203954061 + ... + 204990973.

It is an arithmetic number, because the mean of its divisors is an integer number (26537939089488).

Almost surely, 2^{212020211020021} is an apocalyptic number.

It is an amenable number.

212020211020021 is a deficient number, since it is larger than the sum of its proper divisors (283301695883).

212020211020021 is a wasteful number, since it uses less digits than its factorization.

212020211020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309931.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212020211020021 its reverse (120020112020212), we get a palindrome (332040323040233).

The spelling of 212020211020021 in words is "two hundred twelve trillion, twenty billion, two hundred eleven million, twenty thousand, twenty-one".