212101120011012 has 96 divisors (see below), whose sum is σ = 526322367648000. Its totient is φ = 66248772759552.

The previous prime is 212101120010999. The next prime is 212101120011013. The reversal of 212101120011012 is 210110021101212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212101120010982 and 212101120011000.

It is not an unprimeable number, because it can be changed into a prime (212101120011013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88360864 + ... + 90729512.

It is an arithmetic number, because the mean of its divisors is an integer number (5482524663000).

Almost surely, 2^{212101120011012} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212101120011012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263161183824000).

212101120011012 is an abundant number, since it is smaller than the sum of its proper divisors (314221247636988).

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

212101120011012 is a wasteful number, since it uses less digits than its factorization.

212101120011012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370605 (or 2370603 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 212101120011012 its reverse (210110021101212), we get a palindrome (422211141112224).

The spelling of 212101120011012 in words is "two hundred twelve trillion, one hundred one billion, one hundred twenty million, eleven thousand, twelve".