201012012221020 has 384 divisors, whose sum is σ = 597158808422400. Its totient is φ = 54738386841600.

The previous prime is 201012012220979. The next prime is 201012012221063. The reversal of 201012012221020 is 20122210210102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 201012012220985 and 201012012221003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 406379050 + ... + 406873390.

It is an arithmetic number, because the mean of its divisors is an integer number (1555101063600).

Almost surely, 2^{201012012221020} is an apocalyptic number.

201012012221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201012012221020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298579404211200).

201012012221020 is an abundant number, since it is smaller than the sum of its proper divisors (396146796201380).

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

201012012221020 is a wasteful number, since it uses less digits than its factorization.

201012012221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495469 (or 495467 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 201012012221020 its reverse (20122210210102), we get a palindrome (221134222431122).

The spelling of 201012012221020 in words is "two hundred one trillion, twelve billion, twelve million, two hundred twenty-one thousand, twenty".