21022001200101 has 16 divisors (see below), whose sum is σ = 31563825850368. Its totient is φ = 12329619471600.

The previous prime is 21022001200061. The next prime is 21022001200111. The reversal of 21022001200101 is 10100210022012.

It is not a de Polignac number, because 21022001200101 - 2⁶ = 21022001200037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022001200111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10274681871 + ... + 10274683916.

It is an arithmetic number, because the mean of its divisors is an integer number (1972739115648).

Almost surely, 2^{21022001200101} is an apocalyptic number.

It is an amenable number.

21022001200101 is a deficient number, since it is larger than the sum of its proper divisors (10541824650267).

21022001200101 is a wasteful number, since it uses less digits than its factorization.

21022001200101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20549365832.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21022001200101 its reverse (10100210022012), we get a palindrome (31122211222113).

The spelling of 21022001200101 in words is "twenty-one trillion, twenty-two billion, one million, two hundred thousand, one hundred one".