201201112121020 has 48 divisors (see below), whose sum is σ = 465497154503136. Its totient is φ = 72439644320000.

The previous prime is 201201112121017. The next prime is 201201112121029. The reversal of 201201112121020 is 20121211102102.

It is a super-2 number, since 2×201201112121020² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201201112120985 and 201201112121003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201201112121029) 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, 4527455551 + ... + 4527499990.

It is an arithmetic number, because the mean of its divisors is an integer number (9697857385482).

Almost surely, 2^{201201112121020} is an apocalyptic number.

201201112121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201201112121020 is an abundant number, since it is smaller than the sum of its proper divisors (264296042382116).

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

201201112121020 is a wasteful number, since it uses less digits than its factorization.

201201112121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9054955662 (or 9054955660 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 201201112121020 its reverse (20121211102102), we get a palindrome (221322323223122).

The spelling of 201201112121020 in words is "two hundred one trillion, two hundred one billion, one hundred twelve million, one hundred twenty-one thousand, twenty".