101121000020020 has 24 divisors (see below), whose sum is σ = 212356604275200. Its totient is φ = 40447923011232.

The previous prime is 101121000020009. The next prime is 101121000020023. The reversal of 101121000020020 is 20020000121101.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 101121000019979 and 101121000020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101121000020023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28071460 + ... + 31468219.

It is an arithmetic number, because the mean of its divisors is an integer number (8848191844800).

Almost surely, 2^{101121000020020} is an apocalyptic number.

101121000020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101121000020020 is an abundant number, since it is smaller than the sum of its proper divisors (111235604255180).

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

101121000020020 is a wasteful number, since it uses less digits than its factorization.

101121000020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59624607 (or 59624605 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 101121000020020 its reverse (20020000121101), we get a palindrome (121141000141121).

The spelling of 101121000020020 in words is "one hundred one trillion, one hundred twenty-one billion, twenty thousand, twenty".