20361402101 has 4 divisors (see below), whose sum is σ = 20510025612. Its totient is φ = 20212778592.

The previous prime is 20361402067. The next prime is 20361402109. The reversal of 20361402101 is 10120416302.

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 4333588900 + 16027813201 = 65830^2 + 126601^2 .

It is a cyclic number.

It is not a de Polignac number, because 20361402101 - 2¹⁰ = 20361401077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20361402109) 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, 74311550 + ... + 74311823.

It is an arithmetic number, because the mean of its divisors is an integer number (5127506403).

Almost surely, 2^20361402101 is an apocalyptic number.

It is an amenable number.

20361402101 is a deficient number, since it is larger than the sum of its proper divisors (148623511).

20361402101 is a wasteful number, since it uses less digits than its factorization.

20361402101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148623510.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20361402101 its reverse (10120416302), we get a palindrome (30481818403).

The spelling of 20361402101 in words is "twenty billion, three hundred sixty-one million, four hundred two thousand, one hundred one".