21002022112101 has 8 divisors (see below), whose sum is σ = 28012497594624. Its totient is φ = 13996447352160.

The previous prime is 21002022112081. The next prime is 21002022112129. The reversal of 21002022112101 is 10121122020012.

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

It is not a de Polignac number, because 21002022112101 - 2¹⁵ = 21002022079333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002022112151) 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, 1225170645 + ... + 1225187786.

It is an arithmetic number, because the mean of its divisors is an integer number (3501562199328).

Almost surely, 2^{21002022112101} is an apocalyptic number.

It is an amenable number.

21002022112101 is a deficient number, since it is larger than the sum of its proper divisors (7010475482523).

21002022112101 is a wasteful number, since it uses less digits than its factorization.

21002022112101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2450361291.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21002022112101 its reverse (10121122020012), we get a palindrome (31123144132113).

The spelling of 21002022112101 in words is "twenty-one trillion, two billion, twenty-two million, one hundred twelve thousand, one hundred one".