201012021126 has 48 divisors (see below), whose sum is σ = 513800322048. Its totient is φ = 55579359600.

The previous prime is 201012021109. The next prime is 201012021127. The reversal of 201012021126 is 621120210102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 201012021099 and 201012021108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201012021127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25727280 + ... + 25735091.

It is an arithmetic number, because the mean of its divisors is an integer number (10704173376).

Almost surely, 2^201012021126 is an apocalyptic number.

201012021126 is an abundant number, since it is smaller than the sum of its proper divisors (312788300922).

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

201012021126 is a wasteful number, since it uses less digits than its factorization.

201012021126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51462417 (or 51462414 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 201012021126 its reverse (621120210102), we get a palindrome (822132231228).

The spelling of 201012021126 in words is "two hundred one billion, twelve million, twenty-one thousand, one hundred twenty-six".