120001022020021 has 8 divisors (see below), whose sum is σ = 120047181741344. Its totient is φ = 119954863299600.

The previous prime is 120001022019953. The next prime is 120001022020039. The reversal of 120001022020021 is 120020220100021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120001022020021 - 2²¹ = 120001019922869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120001022019983 and 120001022020010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120001022020091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315832666 + ... + 316212388.

It is an arithmetic number, because the mean of its divisors is an integer number (15005897717668).

Almost surely, 2^{120001022020021} is an apocalyptic number.

It is an amenable number.

120001022020021 is a deficient number, since it is larger than the sum of its proper divisors (46159721323).

120001022020021 is a wasteful number, since it uses less digits than its factorization.

120001022020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500451.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 120001022020021 its reverse (120020220100021), we get a palindrome (240021242120042).

The spelling of 120001022020021 in words is "one hundred twenty trillion, one billion, twenty-two million, twenty thousand, twenty-one".