101121021210020 has 24 divisors (see below), whose sum is σ = 242690450904384. Its totient is φ = 34670064414816.

The previous prime is 101121021210017. The next prime is 101121021210023. The reversal of 101121021210020 is 20012120121101.

It is an interprime number because it is at equal distance from previous prime (101121021210017) and next prime (101121021210023).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 101121021209977 and 101121021210004.

It is not an unprimeable number, because it can be changed into a prime (101121021210023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361146504182 + ... + 361146504461.

It is an arithmetic number, because the mean of its divisors is an integer number (10112102121016).

Almost surely, 2^{101121021210020} is an apocalyptic number.

101121021210020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101121021210020 is an abundant number, since it is smaller than the sum of its proper divisors (141569429694364).

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

101121021210020 is a wasteful number, since it uses less digits than its factorization.

101121021210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722293008659 (or 722293008657 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 101121021210020 its reverse (20012120121101), we get a palindrome (121133141331121).

The spelling of 101121021210020 in words is "one hundred one trillion, one hundred twenty-one billion, twenty-one million, two hundred ten thousand, twenty".