101000001021020 has 24 divisors (see below), whose sum is σ = 212103730621104. Its totient is φ = 40399290222336.

The previous prime is 101000001021011. The next prime is 101000001021109. The reversal of 101000001021020 is 20120100000101.

It is a junction number, because it is equal to n+sod(n) for n = 101000001020989 and 101000001021007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43219709 + ... + 45496628.

It is an arithmetic number, because the mean of its divisors is an integer number (8837655442546).

Almost surely, 2^{101000001021020} is an apocalyptic number.

101000001021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101000001021020 is an abundant number, since it is smaller than the sum of its proper divisors (111103729600084).

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

101000001021020 is a wasteful number, since it uses less digits than its factorization.

101000001021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88773269 (or 88773267 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 101000001021020 its reverse (20120100000101), we get a palindrome (121120101021121).

The spelling of 101000001021020 in words is "one hundred one trillion, one million, twenty-one thousand, twenty".