221220212011022 has 16 divisors (see below), whose sum is σ = 382989447670752. Its totient is φ = 93869962663200.

The previous prime is 221220212011003. The next prime is 221220212011037. The reversal of 221220212011022 is 220110212022122.

It is a junction number, because it is equal to n+sod(n) for n = 221220212010985 and 221220212011003.

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, 78224967473 + ... + 78224970300.

It is an arithmetic number, because the mean of its divisors is an integer number (23936840479422).

Almost surely, 2^{221220212011022} is an apocalyptic number.

221220212011022 is a deficient number, since it is larger than the sum of its proper divisors (161769235659730).

221220212011022 is a wasteful number, since it uses less digits than its factorization.

221220212011022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156449937883.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221220212011022 its reverse (220110212022122), we get a palindrome (441330424033144).

The spelling of 221220212011022 in words is "two hundred twenty-one trillion, two hundred twenty billion, two hundred twelve million, eleven thousand, twenty-two".