21140122201 has 8 divisors (see below), whose sum is σ = 23147054208. Its totient is φ = 19147374000.

The previous prime is 21140122127. The next prime is 21140122219. The reversal of 21140122201 is 10222104112.

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 21140122201 - 2²⁷ = 21005904473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21140122291) 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, 3542830 + ... + 3548791.

It is an arithmetic number, because the mean of its divisors is an integer number (2893381776).

Almost surely, 2^21140122201 is an apocalyptic number.

It is an amenable number.

21140122201 is a deficient number, since it is larger than the sum of its proper divisors (2006932007).

21140122201 is a wasteful number, since it uses less digits than its factorization.

21140122201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7091903.

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

Adding to 21140122201 its reverse (10222104112), we get a palindrome (31362226313).

It can be divided in two parts, 21140 and 122201, that added together give a palindrome (143341).

The spelling of 21140122201 in words is "twenty-one billion, one hundred forty million, one hundred twenty-two thousand, two hundred one".