220221101210121 has 12 divisors (see below), whose sum is σ = 347015068573680. Its totient is φ = 133467334066680.

The previous prime is 220221101210107. The next prime is 220221101210147. The reversal of 220221101210121 is 121012101122022.

220221101210121 is a `hidden beast` number, since 220 + 2 + 2 + 110 + 1 + 210 + 121 = 666.

It is not a de Polignac number, because 220221101210121 - 2¹³ = 220221101201929 is a prime.

It is a super-3 number, since 3×220221101210121³ (a number of 44 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220221101210094 and 220221101210103.

It is not an unprimeable number, because it can be changed into a prime (220221101290121) 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, 1112227783791 + ... + 1112227783988.

It is an arithmetic number, because the mean of its divisors is an integer number (28917922381140).

Almost surely, 2^{220221101210121} is an apocalyptic number.

It is an amenable number.

220221101210121 is a deficient number, since it is larger than the sum of its proper divisors (126793967363559).

220221101210121 is a wasteful number, since it uses less digits than its factorization.

220221101210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224455567796 (or 2224455567793 counting only the distinct ones).

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

Adding to 220221101210121 its reverse (121012101122022), we get a palindrome (341233202332143).

The spelling of 220221101210121 in words is "two hundred twenty trillion, two hundred twenty-one billion, one hundred one million, two hundred ten thousand, one hundred twenty-one".