20102211401 has 2 divisors, whose sum is σ = 20102211402. Its totient is φ = 20102211400.

The previous prime is 20102211359. The next prime is 20102211433. The reversal of 20102211401 is 10411220102.

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., 16117572025 + 3984639376 = 126955^2 + 63124^2 .

It is a cyclic number.

It is not a de Polignac number, because 20102211401 - 2²² = 20098017097 is a prime.

It is not a weakly prime, because it can be changed into another prime (20102211461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051105700 + 10051105701.

It is an arithmetic number, because the mean of its divisors is an integer number (10051105701).

Almost surely, 2^20102211401 is an apocalyptic number.

It is an amenable number.

20102211401 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102211401 is an equidigital number, since it uses as much as digits as its factorization.

20102211401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20102211401 its reverse (10411220102), we get a palindrome (30513431503).

The spelling of 20102211401 in words is "twenty billion, one hundred two million, two hundred eleven thousand, four hundred one".