220212122202101 has 4 divisors (see below), whose sum is σ = 220915675308492. Its totient is φ = 219508569095712.

The previous prime is 220212122202091. The next prime is 220212122202113. The reversal of 220212122202101 is 101202221212022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48432566341201 + 171779555860900 = 6959351^2 + 13106470^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220212122202101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220212122207101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351776552726 + ... + 351776553351.

It is an arithmetic number, because the mean of its divisors is an integer number (55228918827123).

Almost surely, 2^{220212122202101} is an apocalyptic number.

It is an amenable number.

220212122202101 is a deficient number, since it is larger than the sum of its proper divisors (703553106391).

220212122202101 is an equidigital number, since it uses as much as digits as its factorization.

220212122202101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703553106390.

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

Adding to 220212122202101 its reverse (101202221212022), we get a palindrome (321414343414123).

The spelling of 220212122202101 in words is "two hundred twenty trillion, two hundred twelve billion, one hundred twenty-two million, two hundred two thousand, one hundred one".