10010120001021 has 16 divisors (see below), whose sum is σ = 16948351324800. Its totient is φ = 5720068571904.

The previous prime is 10010120000989. The next prime is 10010120001041. The reversal of 10010120001021 is 12010002101001.

It is a happy number.

It is not a de Polignac number, because 10010120001021 - 2⁵ = 10010120000989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 10010120000994 and 10010120001012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10010120001041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26481798756 + ... + 26481799133.

It is an arithmetic number, because the mean of its divisors is an integer number (1059271957800).

Almost surely, 2^{10010120001021} is an apocalyptic number.

It is an amenable number.

10010120001021 is a deficient number, since it is larger than the sum of its proper divisors (6938231323779).

10010120001021 is an equidigital number, since it uses as much as digits as its factorization.

10010120001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52963597905 (or 52963597899 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 10010120001021 its reverse (12010002101001), we get a palindrome (22020122102022).

The spelling of 10010120001021 in words is "ten trillion, ten billion, one hundred twenty million, one thousand, twenty-one".