10121021220000 has 120 divisors (see below), whose sum is σ = 33198974002656. Its totient is φ = 2698938976000.

The previous prime is 10121021219989. The next prime is 10121021220067. The reversal of 10121021220000 is 2212012101.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 84281844 + ... + 84401843.

Almost surely, 2^{10121021220000} is an apocalyptic number.

10121021220000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10121021220000 is an abundant number, since it is smaller than the sum of its proper divisors (23077952782656).

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

10121021220000 is an equidigital number, since it uses as much as digits as its factorization.

10121021220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168683720 (or 168683697 counting only the distinct ones).

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

Adding to 10121021220000 its reverse (2212012101), we get a palindrome (10123233232101).

The spelling of 10121021220000 in words is "ten trillion, one hundred twenty-one billion, twenty-one million, two hundred twenty thousand".