201121220100210 has 64 divisors (see below), whose sum is σ = 492676239542400. Its totient is φ = 52534110075392.

The previous prime is 201121220100169. The next prime is 201121220100211. The reversal of 201121220100210 is 12001022121102.

201121220100210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×201121220100210² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 201121220100210.

It is not an unprimeable number, because it can be changed into a prime (201121220100211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 351706365 + ... + 352277744.

It is an arithmetic number, because the mean of its divisors is an integer number (7698066242850).

Almost surely, 2^{201121220100210} is an apocalyptic number.

201121220100210 is an abundant number, since it is smaller than the sum of its proper divisors (291555019442190).

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

201121220100210 is a wasteful number, since it uses less digits than its factorization.

201121220100210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703984315.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 201121220100210 its reverse (12001022121102), we get a palindrome (213122242221312).

The spelling of 201121220100210 in words is "two hundred one trillion, one hundred twenty-one billion, two hundred twenty million, one hundred thousand, two hundred ten".