201002020101220 has 48 divisors (see below), whose sum is σ = 454577212233648. Its totient is φ = 74215573286400.

The previous prime is 201002020101133. The next prime is 201002020101221. The reversal of 201002020101220 is 22101020200102.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 27085217287716 + 173916802813504 = 5204346^2 + 13187752^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 201002020101220.

It is not an unprimeable number, because it can be changed into a prime (201002020101221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32629270 + ... + 38297170.

It is an arithmetic number, because the mean of its divisors is an integer number (9470358588201).

Almost surely, 2^{201002020101220} is an apocalyptic number.

201002020101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201002020101220 is an abundant number, since it is smaller than the sum of its proper divisors (253575192132428).

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

201002020101220 is a wasteful number, since it uses less digits than its factorization.

201002020101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5804320 (or 5804318 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 201002020101220 its reverse (22101020200102), we get a palindrome (223103040301322).

The spelling of 201002020101220 in words is "two hundred one trillion, two billion, twenty million, one hundred one thousand, two hundred twenty".