2120000002021 has 8 divisors (see below), whose sum is σ = 2319028988544. Its totient is φ = 1922021301120.

The previous prime is 2120000001991. The next prime is 2120000002031. The reversal of 2120000002021 is 1202000000212.

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 2120000002021 - 2⁵ = 2120000001989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2120000001989 and 2120000002007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120000002031) 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, 262567180 + ... + 262575253.

It is an arithmetic number, because the mean of its divisors is an integer number (289878623568).

Almost surely, 2^{2120000002021} is an apocalyptic number.

It is an amenable number.

2120000002021 is a deficient number, since it is larger than the sum of its proper divisors (199028986523).

2120000002021 is a wasteful number, since it uses less digits than its factorization.

2120000002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525142811.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 2120000002021 its reverse (1202000000212), we get a palindrome (3322000002233).

The spelling of 2120000002021 in words is "two trillion, one hundred twenty billion, two thousand, twenty-one".