221201121022 has 16 divisors (see below), whose sum is σ = 379782644832. Its totient is φ = 94655299680.

The previous prime is 221201120977. The next prime is 221201121061. The reversal of 221201121022 is 220121102122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221201120987 and 221201121005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12088929 + ... + 12107212.

It is an arithmetic number, because the mean of its divisors is an integer number (23736415302).

Almost surely, 2^221201121022 is an apocalyptic number.

221201121022 is a deficient number, since it is larger than the sum of its proper divisors (158581523810).

221201121022 is a wasteful number, since it uses less digits than its factorization.

221201121022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24196803.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221201121022 its reverse (220121102122), we get a palindrome (441322223144).

The spelling of 221201121022 in words is "two hundred twenty-one billion, two hundred one million, one hundred twenty-one thousand, twenty-two".