21112022001 has 8 divisors (see below), whose sum is σ = 32170700224. Its totient is φ = 12064012560.

The previous prime is 21112021943. The next prime is 21112022053. The reversal of 21112022001 is 10022021112.

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

It is not a de Polignac number, because 21112022001 - 2⁷ = 21112021873 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21112022081) 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, 502667170 + ... + 502667211.

It is an arithmetic number, because the mean of its divisors is an integer number (4021337528).

Almost surely, 2^21112022001 is an apocalyptic number.

21112022001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21112022001 is a deficient number, since it is larger than the sum of its proper divisors (11058678223).

21112022001 is a wasteful number, since it uses less digits than its factorization.

21112022001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005334391.

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

Adding to 21112022001 its reverse (10022021112), we get a palindrome (31134043113).

The spelling of 21112022001 in words is "twenty-one billion, one hundred twelve million, twenty-two thousand, one".