220120022122221 has 32 divisors (see below), whose sum is σ = 316410860924928. Its totient is φ = 135312308268480.

The previous prime is 220120022122213. The next prime is 220120022122277. The reversal of 220120022122221 is 122221220021022.

It is not a de Polignac number, because 220120022122221 - 2³ = 220120022122213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220120022122421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 924867766 + ... + 925105736.

It is an arithmetic number, because the mean of its divisors is an integer number (9887839403904).

Almost surely, 2^{220120022122221} is an apocalyptic number.

It is an amenable number.

220120022122221 is a deficient number, since it is larger than the sum of its proper divisors (96290838802707).

220120022122221 is a wasteful number, since it uses less digits than its factorization.

220120022122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263481.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 220120022122221 its reverse (122221220021022), we get a palindrome (342341242143243).

The spelling of 220120022122221 in words is "two hundred twenty trillion, one hundred twenty billion, twenty-two million, one hundred twenty-two thousand, two hundred twenty-one".