201011212121202 has 192 divisors, whose sum is σ = 532333460415744. Its totient is φ = 53508756787200.

The previous prime is 201011212121191. The next prime is 201011212121257. The reversal of 201011212121202 is 202121212110102.

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

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1264006798 + ... + 1264165814.

It is an arithmetic number, because the mean of its divisors is an integer number (2772570106332).

Almost surely, 2^{201011212121202} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201011212121202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266166730207872).

201011212121202 is an abundant number, since it is smaller than the sum of its proper divisors (331322248294542).

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

201011212121202 is a wasteful number, since it uses less digits than its factorization.

201011212121202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164993 (or 164990 counting only the distinct ones).

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

Adding to 201011212121202 its reverse (202121212110102), we get a palindrome (403132424231304).

The spelling of 201011212121202 in words is "two hundred one trillion, eleven billion, two hundred twelve million, one hundred twenty-one thousand, two hundred two".