21202101122101 has 8 divisors (see below), whose sum is σ = 21213482488704. Its totient is φ = 21190720504800.

The previous prime is 21202101122077. The next prime is 21202101122107. The reversal of 21202101122101 is 10122110120212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21202101122101 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 (21202101122107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61913190 + ... + 62254696.

It is an arithmetic number, because the mean of its divisors is an integer number (2651685311088).

Almost surely, 2^{21202101122101} is an apocalyptic number.

It is an amenable number.

21202101122101 is a deficient number, since it is larger than the sum of its proper divisors (11381366603).

21202101122101 is a wasteful number, since it uses less digits than its factorization.

21202101122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374651.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21202101122101 its reverse (10122110120212), we get a palindrome (31324211242313).

The spelling of 21202101122101 in words is "twenty-one trillion, two hundred two billion, one hundred one million, one hundred twenty-two thousand, one hundred one".