2120022220221 has 24 divisors (see below), whose sum is σ = 3106136230080. Its totient is φ = 1393119072576.

The previous prime is 2120022220219. The next prime is 2120022220231. The reversal of 2120022220221 is 1220222200212.

2120022220221 is a `hidden beast` number, since 2 + 1 + 200 + 22 + 220 + 221 = 666.

It is not a de Polignac number, because 2120022220221 - 2¹ = 2120022220219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2120022220194 and 2120022220203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120022220231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51810 + ... + 2059788.

It is an arithmetic number, because the mean of its divisors is an integer number (129422342920).

Almost surely, 2^{2120022220221} is an apocalyptic number.

It is an amenable number.

2120022220221 is a deficient number, since it is larger than the sum of its proper divisors (986114009859).

2120022220221 is a wasteful number, since it uses less digits than its factorization.

2120022220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009665 (or 2009662 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 2120022220221 its reverse (1220222200212), we get a palindrome (3340244420433).

The spelling of 2120022220221 in words is "two trillion, one hundred twenty billion, twenty-two million, two hundred twenty thousand, two hundred twenty-one".