21020202201101 has 4 divisors (see below), whose sum is σ = 21316261387104. Its totient is φ = 20724143015100.

The previous prime is 21020202201091. The next prime is 21020202201121. The reversal of 21020202201101 is 10110220202012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21020202201101 - 2³⁴ = 21003022331917 is a prime.

It is a super-2 number, since 2×21020202201101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21020202201121) 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, 148029592895 + ... + 148029593036.

It is an arithmetic number, because the mean of its divisors is an integer number (5329065346776).

Almost surely, 2^{21020202201101} is an apocalyptic number.

It is an amenable number.

21020202201101 is a deficient number, since it is larger than the sum of its proper divisors (296059186003).

21020202201101 is an equidigital number, since it uses as much as digits as its factorization.

21020202201101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296059186002.

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

Adding to 21020202201101 its reverse (10110220202012), we get a palindrome (31130422403113).

The spelling of 21020202201101 in words is "twenty-one trillion, twenty billion, two hundred two million, two hundred one thousand, one hundred one".