10102120020001 has 4 divisors (see below), whose sum is σ = 10122364750000. Its totient is φ = 10081875290004.

The previous prime is 10102120019977. The next prime is 10102120020071. The reversal of 10102120020001 is 10002002120101.

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 10102120020001 - 2¹¹ = 10102120017953 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 10102120020001.

It is not an unprimeable number, because it can be changed into a prime (10102120020071) 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, 10122364251 + ... + 10122365248.

It is an arithmetic number, because the mean of its divisors is an integer number (2530591187500).

Almost surely, 2^{10102120020001} is an apocalyptic number.

It is an amenable number.

10102120020001 is a deficient number, since it is larger than the sum of its proper divisors (20244729999).

10102120020001 is an equidigital number, since it uses as much as digits as its factorization.

10102120020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20244729998.

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

Adding to 10102120020001 its reverse (10002002120101), we get a palindrome (20104122140102).

The spelling of 10102120020001 in words is "ten trillion, one hundred two billion, one hundred twenty million, twenty thousand, one".