201000221121012 has 48 divisors (see below), whose sum is σ = 481706480451840. Its totient is φ = 65185163551872.

The previous prime is 201000221120981. The next prime is 201000221121013. The reversal of 201000221121012 is 210121122000102.

It is a junction number, because it is equal to n+sod(n) for n = 201000221120982 and 201000221121000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201000221121013) 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, 7150923 + ... + 21286994.

It is an arithmetic number, because the mean of its divisors is an integer number (10035551676080).

Almost surely, 2^{201000221121012} is an apocalyptic number.

It is an amenable number.

201000221121012 is an abundant number, since it is smaller than the sum of its proper divisors (280706259330828).

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

201000221121012 is a wasteful number, since it uses less digits than its factorization.

201000221121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28453880 (or 28453878 counting only the distinct ones).

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

Adding to 201000221121012 its reverse (210121122000102), we get a palindrome (411121343121114).

The spelling of 201000221121012 in words is "two hundred one trillion, two hundred twenty-one million, one hundred twenty-one thousand, twelve".