2120001201021 has 8 divisors (see below), whose sum is σ = 3083638110624. Its totient is φ = 1284849212720.

The previous prime is 2120001201007. The next prime is 2120001201029. The reversal of 2120001201021 is 1201021000212.

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 2120001201021 - 2⁹ = 2120001200509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2120001200988 and 2120001201006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120001201029) 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, 32121230286 + ... + 32121230351.

It is an arithmetic number, because the mean of its divisors is an integer number (385454763828).

Almost surely, 2^{2120001201021} is an apocalyptic number.

It is an amenable number.

2120001201021 is a deficient number, since it is larger than the sum of its proper divisors (963636909603).

2120001201021 is a wasteful number, since it uses less digits than its factorization.

2120001201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64242460651.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2120001201021 its reverse (1201021000212), we get a palindrome (3321022201233).

The spelling of 2120001201021 in words is "two trillion, one hundred twenty billion, one million, two hundred one thousand, twenty-one".