20213202101 has 4 divisors (see below), whose sum is σ = 20910209100. Its totient is φ = 19516195104.

The previous prime is 20213202091. The next prime is 20213202133. The reversal of 20213202101 is 10120231202.

It is a happy number.

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 7010043076 + 13203159025 = 83726^2 + 114905^2 .

It is a cyclic number.

It is not a de Polignac number, because 20213202101 - 2¹⁰ = 20213201077 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 (20213202151) 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, 348503456 + ... + 348503513.

It is an arithmetic number, because the mean of its divisors is an integer number (5227552275).

Almost surely, 2^20213202101 is an apocalyptic number.

It is an amenable number.

20213202101 is a deficient number, since it is larger than the sum of its proper divisors (697006999).

20213202101 is an equidigital number, since it uses as much as digits as its factorization.

20213202101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697006998.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20213202101 its reverse (10120231202), we get a palindrome (30333433303).

The spelling of 20213202101 in words is "twenty billion, two hundred thirteen million, two hundred two thousand, one hundred one".