10020121020001 has 4 divisors (see below), whose sum is σ = 10086479437504. Its totient is φ = 9953762602500.

The previous prime is 10020121019921. The next prime is 10020121020017. The reversal of 10020121020001 is 10002012102001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10020121020001 - 2³¹ = 10017973536353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10020121020001.

It is not an unprimeable number, because it can be changed into a prime (10020121020601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33179208525 + ... + 33179208826.

It is an arithmetic number, because the mean of its divisors is an integer number (2521619859376).

Almost surely, 2^{10020121020001} is an apocalyptic number.

It is an amenable number.

10020121020001 is a deficient number, since it is larger than the sum of its proper divisors (66358417503).

10020121020001 is an equidigital number, since it uses as much as digits as its factorization.

10020121020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66358417502.

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

Adding to 10020121020001 its reverse (10002012102001), we get a palindrome (20022133122002).

It can be divided in two parts, 1002012102000 and 1, that added together give a palindrome (1002012102001).

The spelling of 10020121020001 in words is "ten trillion, twenty billion, one hundred twenty-one million, twenty thousand, one".