212102020011011 has 4 divisors (see below), whose sum is σ = 228417560011872. Its totient is φ = 195786480010152.

The previous prime is 212102020011001. The next prime is 212102020011019. The reversal of 212102020011011 is 110110020201212.

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

It is a cyclic number.

It is not a de Polignac number, because 212102020011011 - 2³⁴ = 212084840141827 is a prime.

It is a super-2 number, since 2×212102020011011² (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 (212102020011019) 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, 8157770000411 + ... + 8157770000436.

It is an arithmetic number, because the mean of its divisors is an integer number (57104390002968).

Almost surely, 2^{212102020011011} is an apocalyptic number.

212102020011011 is a deficient number, since it is larger than the sum of its proper divisors (16315540000861).

212102020011011 is a wasteful number, since it uses less digits than its factorization.

212102020011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16315540000860.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 212102020011011 its reverse (110110020201212), we get a palindrome (322212040212223).

The spelling of 212102020011011 in words is "two hundred twelve trillion, one hundred two billion, twenty million, eleven thousand, eleven".