10121220010020 has 48 divisors (see below), whose sum is σ = 32387904033408. Its totient is φ = 2313421716480.

The previous prime is 10121220010003. The next prime is 10121220010039. The reversal of 10121220010020 is 2001002212101.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 10121220009978 and 10121220010005.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12049071021 + ... + 12049071860.

It is an arithmetic number, because the mean of its divisors is an integer number (674748000696).

Almost surely, 2^{10121220010020} is an apocalyptic number.

10121220010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10121220010020 is an abundant number, since it is smaller than the sum of its proper divisors (22266684023388).

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

10121220010020 is a wasteful number, since it uses less digits than its factorization.

10121220010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24098142900 (or 24098142898 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10121220010020 its reverse (2001002212101), we get a palindrome (12122222222121).

The spelling of 10121220010020 in words is "ten trillion, one hundred twenty-one billion, two hundred twenty million, ten thousand, twenty".