201220101011213 has 2 divisors, whose sum is σ = 201220101011214. Its totient is φ = 201220101011212.

The previous prime is 201220101011107. The next prime is 201220101011227. The reversal of 201220101011213 is 312110101022102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168430482617929 + 32789618393284 = 12978077^2 + 5726222^2 .

It is a cyclic number.

It is not a de Polignac number, because 201220101011213 - 2²² = 201220096816909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201220101011191 and 201220101011200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201220101091213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100610050505606 + 100610050505607.

It is an arithmetic number, because the mean of its divisors is an integer number (100610050505607).

Almost surely, 2^{201220101011213} is an apocalyptic number.

It is an amenable number.

201220101011213 is a deficient number, since it is larger than the sum of its proper divisors (1).

201220101011213 is an equidigital number, since it uses as much as digits as its factorization.

201220101011213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 201220101011213 its reverse (312110101022102), we get a palindrome (513330202033315).

The spelling of 201220101011213 in words is "two hundred one trillion, two hundred twenty billion, one hundred one million, eleven thousand, two hundred thirteen".