201212122221120 has 56 divisors (see below), whose sum is σ = 638848488055104. Its totient is φ = 53656565925376.

The previous prime is 201212122221107. The next prime is 201212122221133. The reversal of 201212122221120 is 21122221212102.

It is an interprime number because it is at equal distance from previous prime (201212122221107) and next prime (201212122221133).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104797979364 + ... + 104797981283.

Almost surely, 2^{201212122221120} is an apocalyptic number.

201212122221120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201212122221120 is an abundant number, since it is smaller than the sum of its proper divisors (437636365833984).

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

201212122221120 is a wasteful number, since it uses less digits than its factorization.

201212122221120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209595960667 (or 209595960657 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 201212122221120 its reverse (21122221212102), we get a palindrome (222334343433222).

The spelling of 201212122221120 in words is "two hundred one trillion, two hundred twelve billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred twenty".