21001202022101 has 8 divisors (see below), whose sum is σ = 24020080977984. Its totient is φ = 17986999875840.

The previous prime is 21001202022091. The next prime is 21001202022107. The reversal of 21001202022101 is 10122020210012.

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

It is a cyclic number.

It is not a de Polignac number, because 21001202022101 - 2⁶ = 21001202022037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21001202022107) 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, 1169192780 + ... + 1169210741.

It is an arithmetic number, because the mean of its divisors is an integer number (3002510122248).

Almost surely, 2^{21001202022101} is an apocalyptic number.

It is an amenable number.

21001202022101 is a deficient number, since it is larger than the sum of its proper divisors (3018878955883).

21001202022101 is a wasteful number, since it uses less digits than its factorization.

21001202022101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2338404811.

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

Adding to 21001202022101 its reverse (10122020210012), we get a palindrome (31123222232113).

The spelling of 21001202022101 in words is "twenty-one trillion, one billion, two hundred two million, twenty-two thousand, one hundred one".