201010212120 has 128 divisors (see below), whose sum is σ = 635480432640. Its totient is φ = 50764454400.

The previous prime is 201010212113. The next prime is 201010212133. The reversal of 201010212120 is 21212010102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 201010212096 and 201010212105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81784 + ... + 639303.

It is an arithmetic number, because the mean of its divisors is an integer number (4964690880).

Almost surely, 2^201010212120 is an apocalyptic number.

201010212120 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 201010212120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317740216320).

201010212120 is an abundant number, since it is smaller than the sum of its proper divisors (434470220520).

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

201010212120 is a wasteful number, since it uses less digits than its factorization.

201010212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721225 (or 721221 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 201010212120 its reverse (21212010102), we get a palindrome (222222222222).

The spelling of 201010212120 in words is "two hundred one billion, ten million, two hundred twelve thousand, one hundred twenty".