201212011012220 has 24 divisors (see below), whose sum is σ = 455048701828224. Its totient is φ = 74293665604416.

The previous prime is 201212011012219. The next prime is 201212011012237. The reversal of 201212011012220 is 22210110212102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386946174764 + ... + 386946175283.

It is an arithmetic number, because the mean of its divisors is an integer number (18960362576176).

Almost surely, 2^{201212011012220} is an apocalyptic number.

201212011012220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201212011012220 is an abundant number, since it is smaller than the sum of its proper divisors (253836690816004).

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

201212011012220 is a wasteful number, since it uses less digits than its factorization.

201212011012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773892350069 (or 773892350067 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 201212011012220 its reverse (22210110212102), we get a palindrome (223422121224322).

The spelling of 201212011012220 in words is "two hundred one trillion, two hundred twelve billion, eleven million, twelve thousand, two hundred twenty".