220221022121001 has 36 divisors (see below), whose sum is σ = 349652636476416. Its totient is φ = 133463930236560.

The previous prime is 220221022120969. The next prime is 220221022121021. The reversal of 220221022121001 is 100121220122022.

It is a happy number.

220221022121001 is a `hidden beast` number, since 2 + 20 + 2 + 210 + 221 + 210 + 0 + 1 = 666.

It is not a de Polignac number, because 220221022121001 - 2⁵ = 220221022120969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220221022121021) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 41132440 + ... + 46177046.

It is an arithmetic number, because the mean of its divisors is an integer number (9712573235456).

Almost surely, 2^{220221022121001} is an apocalyptic number.

It is an amenable number.

220221022121001 is a deficient number, since it is larger than the sum of its proper divisors (129431614355415).

220221022121001 is a wasteful number, since it uses less digits than its factorization.

220221022121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5084722 (or 5084708 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 220221022121001 its reverse (100121220122022), we get a palindrome (320342242243023).

The spelling of 220221022121001 in words is "two hundred twenty trillion, two hundred twenty-one billion, twenty-two million, one hundred twenty-one thousand, one".