1201010121020 has 12 divisors (see below), whose sum is σ = 2522121254184. Its totient is φ = 480404048400.

The previous prime is 1201010121007. The next prime is 1201010121023. The reversal of 1201010121020 is 201210101021.

It is a junction number, because it is equal to n+sod(n) for n = 1201010120992 and 1201010121010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201010121023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30025253006 + ... + 30025253045.

It is an arithmetic number, because the mean of its divisors is an integer number (210176771182).

Almost surely, 2^{1201010121020} is an apocalyptic number.

1201010121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201010121020 is an abundant number, since it is smaller than the sum of its proper divisors (1321111133164).

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

1201010121020 is a wasteful number, since it uses less digits than its factorization.

1201010121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60050506060 (or 60050506058 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1201010121020 its reverse (201210101021), we get a palindrome (1402220222041).

The spelling of 1201010121020 in words is "one trillion, two hundred one billion, ten million, one hundred twenty-one thousand, twenty".