201101210221212 has 384 divisors, whose sum is σ = 616472568391680. Its totient is φ = 55508795596800.

The previous prime is 201101210221193. The next prime is 201101210221243. The reversal of 201101210221212 is 212122012101102.

201101210221212 is a `hidden beast` number, since 2 + 0 + 110 + 121 + 0 + 221 + 212 = 666.

It is a super-2 number, since 2×201101210221212² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 765528087 + ... + 765790737.

It is an arithmetic number, because the mean of its divisors is an integer number (1605397313520).

Almost surely, 2^{201101210221212} 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 201101210221212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308236284195840).

201101210221212 is an abundant number, since it is smaller than the sum of its proper divisors (415371358170468).

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

201101210221212 is a wasteful number, since it uses less digits than its factorization.

201101210221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263018 (or 263010 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 201101210221212 its reverse (212122012101102), we get a palindrome (413223222322314).

The spelling of 201101210221212 in words is "two hundred one trillion, one hundred one billion, two hundred ten million, two hundred twenty-one thousand, two hundred twelve".