21110022201 has 8 divisors (see below), whose sum is σ = 28161280224. Its totient is φ = 14066056160.

The previous prime is 21110022139. The next prime is 21110022203. The reversal of 21110022201 is 10222001112.

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 21110022201 - 2¹⁴ = 21110005817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21110022203) 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, 1816236 + ... + 1827821.

It is an arithmetic number, because the mean of its divisors is an integer number (3520160028).

Almost surely, 2^21110022201 is an apocalyptic number.

It is an amenable number.

21110022201 is a deficient number, since it is larger than the sum of its proper divisors (7051258023).

21110022201 is a wasteful number, since it uses less digits than its factorization.

21110022201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3645991.

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

Adding to 21110022201 its reverse (10222001112), we get a palindrome (31332023313).

The spelling of 21110022201 in words is "twenty-one billion, one hundred ten million, twenty-two thousand, two hundred one".