201001212122022 has 96 divisors (see below), whose sum is σ = 488585006451360. Its totient is φ = 59315395530240.

The previous prime is 201001212121999. The next prime is 201001212122047. The reversal of 201001212122022 is 220221212100102.

It is a happy number.

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 = 201001212121986 and 201001212122004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 176982433 + ... + 178114524.

It is an arithmetic number, because the mean of its divisors is an integer number (5089427150535).

Almost surely, 2^{201001212122022} is an apocalyptic number.

201001212122022 is an abundant number, since it is smaller than the sum of its proper divisors (287583794329338).

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

201001212122022 is a wasteful number, since it uses less digits than its factorization.

201001212122022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355097078 (or 355097075 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 201001212122022 its reverse (220221212100102), we get a palindrome (421222424222124).

The spelling of 201001212122022 in words is "two hundred one trillion, one billion, two hundred twelve million, one hundred twenty-two thousand, twenty-two".