201121121001222 has 48 divisors (see below), whose sum is σ = 448891876232592. Its totient is φ = 65031406735680.

The previous prime is 201121121001161. The next prime is 201121121001223. The reversal of 201121121001222 is 222100121121102.

201121121001222 is a `hidden beast` number, since 20 + 1 + 1 + 211 + 210 + 0 + 1 + 222 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 201121121001195 and 201121121001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201121121001223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 455948233 + ... + 456389124.

It is an arithmetic number, because the mean of its divisors is an integer number (9351914088179).

Almost surely, 2^{201121121001222} is an apocalyptic number.

201121121001222 is an abundant number, since it is smaller than the sum of its proper divisors (247770755231370).

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

201121121001222 is a wasteful number, since it uses less digits than its factorization.

201121121001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912337733 (or 912337730 counting only the distinct ones).

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

Adding to 201121121001222 its reverse (222100121121102), we get a palindrome (423221242122324).

The spelling of 201121121001222 in words is "two hundred one trillion, one hundred twenty-one billion, one hundred twenty-one million, one thousand, two hundred twenty-two".