221022021011121 has 12 divisors (see below), whose sum is σ = 348277124017680. Its totient is φ = 133952740006680.

The previous prime is 221022021010969. The next prime is 221022021011131. The reversal of 221022021011121 is 121110120220122.

221022021011121 is a `hidden beast` number, since 2 + 210 + 220 + 210 + 1 + 1 + 1 + 21 = 666.

It is not a de Polignac number, because 221022021011121 - 2²³ = 221022012622513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221022021011094 and 221022021011103.

It is not an unprimeable number, because it can be changed into a prime (221022021011131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1116272833291 + ... + 1116272833488.

It is an arithmetic number, because the mean of its divisors is an integer number (29023093668140).

Almost surely, 2^{221022021011121} is an apocalyptic number.

It is an amenable number.

221022021011121 is a deficient number, since it is larger than the sum of its proper divisors (127255103006559).

221022021011121 is a wasteful number, since it uses less digits than its factorization.

221022021011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2232545666796 (or 2232545666793 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 221022021011121 its reverse (121110120220122), we get a palindrome (342132141231243).

The spelling of 221022021011121 in words is "two hundred twenty-one trillion, twenty-two billion, twenty-one million, eleven thousand, one hundred twenty-one".