201021101011212 has 12 divisors (see below), whose sum is σ = 469049235692856. Its totient is φ = 67007033670400.

The previous prime is 201021101011207. The next prime is 201021101011243. The reversal of 201021101011212 is 212110101120102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 201021101011191 and 201021101011200.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8375879208789 + ... + 8375879208812.

It is an arithmetic number, because the mean of its divisors is an integer number (39087436307738).

Almost surely, 2^{201021101011212} is an apocalyptic number.

It is an amenable number.

201021101011212 is an abundant number, since it is smaller than the sum of its proper divisors (268028134681644).

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

201021101011212 is a wasteful number, since it uses less digits than its factorization.

201021101011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16751758417608 (or 16751758417606 counting only the distinct ones).

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

Adding to 201021101011212 its reverse (212110101120102), we get a palindrome (413131202131314).

The spelling of 201021101011212 in words is "two hundred one trillion, twenty-one billion, one hundred one million, eleven thousand, two hundred twelve".