201000121002020 has 24 divisors (see below), whose sum is σ = 440452439066304. Its totient is φ = 76904394122336.

The previous prime is 201000121002011. The next prime is 201000121002029. The reversal of 201000121002020 is 20200121000102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (201000121002011) and next prime (201000121002029).

It is a junction number, because it is equal to n+sod(n) for n = 201000121001992 and 201000121002010.

It is not an unprimeable number, because it can be changed into a prime (201000121002029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218478391934 + ... + 218478392853.

It is an arithmetic number, because the mean of its divisors is an integer number (18352184961096).

Almost surely, 2^{201000121002020} is an apocalyptic number.

201000121002020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201000121002020 is an abundant number, since it is smaller than the sum of its proper divisors (239452318064284).

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

201000121002020 is a wasteful number, since it uses less digits than its factorization.

201000121002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436956784819 (or 436956784817 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 201000121002020 its reverse (20200121000102), we get a palindrome (221200242002122).

The spelling of 201000121002020 in words is "two hundred one trillion, one hundred twenty-one million, two thousand, twenty".