212020021101211 has 4 divisors (see below), whose sum is σ = 212022191067424. Its totient is φ = 212017851135000.

The previous prime is 212020021101191. The next prime is 212020021101257. The reversal of 212020021101211 is 112101120020212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212020021101211 is a prime.

It is a super-2 number, since 2×212020021101211² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212020021101271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1084836540 + ... + 1085031961.

It is an arithmetic number, because the mean of its divisors is an integer number (53005547766856).

Almost surely, 2^{212020021101211} is an apocalyptic number.

212020021101211 is a deficient number, since it is larger than the sum of its proper divisors (2169966213).

212020021101211 is an equidigital number, since it uses as much as digits as its factorization.

212020021101211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169966212.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212020021101211 its reverse (112101120020212), we get a palindrome (324121141121423).

The spelling of 212020021101211 in words is "two hundred twelve trillion, twenty billion, twenty-one million, one hundred one thousand, two hundred eleven".