21121022200201 has 96 divisors (see below), whose sum is σ = 28208395514880. Its totient is φ = 15435740453760.

The previous prime is 21121022200141. The next prime is 21121022200261. The reversal of 21121022200201 is 10200222012112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21121022200141) and next prime (21121022200261).

It is not a de Polignac number, because 21121022200201 - 2³³ = 21112432265609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21121022200261) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3421513551 + ... + 3421519723.

It is an arithmetic number, because the mean of its divisors is an integer number (293837453280).

Almost surely, 2^{21121022200201} is an apocalyptic number.

It is an amenable number.

21121022200201 is a deficient number, since it is larger than the sum of its proper divisors (7087373314679).

21121022200201 is a wasteful number, since it uses less digits than its factorization.

21121022200201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8315 (or 8304 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21121022200201 its reverse (10200222012112), we get a palindrome (31321244212313).

The spelling of 21121022200201 in words is "twenty-one trillion, one hundred twenty-one billion, twenty-two million, two hundred thousand, two hundred one".