2120221601616 has 20 divisors (see below), whose sum is σ = 5477239137632. Its totient is φ = 706740533856.

The previous prime is 2120221601581. The next prime is 2120221601651. The reversal of 2120221601616 is 6161061220212.

It is an interprime number because it is at equal distance from previous prime (2120221601581) and next prime (2120221601651).

It is a super-2 number, since 2×2120221601616² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22085641636 + ... + 22085641731.

Almost surely, 2^{2120221601616} is an apocalyptic number.

It is an amenable number.

2120221601616 is an abundant number, since it is smaller than the sum of its proper divisors (3357017536016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2120221601616 is a wasteful number, since it uses less digits than its factorization.

2120221601616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44171283378 (or 44171283372 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

Adding to 2120221601616 its reverse (6161061220212), we get a palindrome (8281282821828).

The spelling of 2120221601616 in words is "two trillion, one hundred twenty billion, two hundred twenty-one million, six hundred one thousand, six hundred sixteen".