10201242040021 has 4 divisors (see below), whose sum is σ = 10201390790944. Its totient is φ = 10201093289100.

The previous prime is 10201242039959. The next prime is 10201242040109. The reversal of 10201242040021 is 12004024210201.

10201242040021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 10201242040021 - 2⁹ = 10201242039509 is a prime.

It is a super-4 number, since 4×10201242040021⁴ (a number of 53 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10201242070021) 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, 74272545 + ... + 74409766.

It is an arithmetic number, because the mean of its divisors is an integer number (2550347697736).

Almost surely, 2^{10201242040021} is an apocalyptic number.

It is an amenable number.

10201242040021 is a deficient number, since it is larger than the sum of its proper divisors (148750923).

10201242040021 is an equidigital number, since it uses as much as digits as its factorization.

10201242040021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148750922.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 10201242040021 its reverse (12004024210201), we get a palindrome (22205266250222).

The spelling of 10201242040021 in words is "ten trillion, two hundred one billion, two hundred forty-two million, forty thousand, twenty-one".