220212102121 has 16 divisors (see below), whose sum is σ = 250124990976. Its totient is φ = 192108240000.

The previous prime is 220212102109. The next prime is 220212102137. The reversal of 220212102121 is 121201212022.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 220212102121 - 2¹³ = 220212093929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220212102095 and 220212102104.

It is not an unprimeable number, because it can be changed into a prime (220212102151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3974745 + ... + 4029766.

It is an arithmetic number, because the mean of its divisors is an integer number (15632811936).

Almost surely, 2^220212102121 is an apocalyptic number.

It is an amenable number.

220212102121 is a deficient number, since it is larger than the sum of its proper divisors (29912888855).

220212102121 is a wasteful number, since it uses less digits than its factorization.

220212102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8004624.

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

Adding to 220212102121 its reverse (121201212022), we get a palindrome (341413314143).

The spelling of 220212102121 in words is "two hundred twenty billion, two hundred twelve million, one hundred two thousand, one hundred twenty-one".