10121200010020 has 24 divisors (see below), whose sum is σ = 23186749114368. Its totient is φ = 3680436367200.

The previous prime is 10121200009933. The next prime is 10121200010021. The reversal of 10121200010020 is 2001000212101.

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 = 10121200009979 and 10121200010006.

It is not an unprimeable number, because it can be changed into a prime (10121200010021) 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, 23002727076 + ... + 23002727515.

It is an arithmetic number, because the mean of its divisors is an integer number (966114546432).

Almost surely, 2^{10121200010020} is an apocalyptic number.

10121200010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10121200010020 is an abundant number, since it is smaller than the sum of its proper divisors (13065549104348).

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

10121200010020 is a wasteful number, since it uses less digits than its factorization.

10121200010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46005454611 (or 46005454609 counting only the distinct ones).

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

Adding to 10121200010020 its reverse (2001000212101), we get a palindrome (12122200222121).

The spelling of 10121200010020 in words is "ten trillion, one hundred twenty-one billion, two hundred million, ten thousand, twenty".