201000001011220 has 12 divisors (see below), whose sum is σ = 422100002123604. Its totient is φ = 80400000404480.

The previous prime is 201000001011203. The next prime is 201000001011283. The reversal of 201000001011220 is 22110100000102.

It can be written as a sum of positive squares in 2 ways, for example, as 160264307478916 + 40735693532304 = 12659554^2 + 6382452^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 201000001011197 and 201000001011206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5025000025261 + ... + 5025000025300.

It is an arithmetic number, because the mean of its divisors is an integer number (35175000176967).

Almost surely, 2^{201000001011220} is an apocalyptic number.

201000001011220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201000001011220 is an abundant number, since it is smaller than the sum of its proper divisors (221100001112384).

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

201000001011220 is a wasteful number, since it uses less digits than its factorization.

201000001011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10050000050570 (or 10050000050568 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 201000001011220 its reverse (22110100000102), we get a palindrome (223110101011322).

The spelling of 201000001011220 in words is "two hundred one trillion, one million, eleven thousand, two hundred twenty".