21113001201 has 8 divisors (see below), whose sum is σ = 28159335040. Its totient is φ = 14071000752.

The previous prime is 21113001197. The next prime is 21113001223. The reversal of 21113001201 is 10210031112.

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

It is not a de Polignac number, because 21113001201 - 2² = 21113001197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21113001251) 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, 1071961 + ... + 1091478.

It is an arithmetic number, because the mean of its divisors is an integer number (3519916880).

Almost surely, 2^21113001201 is an apocalyptic number.

It is an amenable number.

21113001201 is a deficient number, since it is larger than the sum of its proper divisors (7046333839).

21113001201 is a wasteful number, since it uses less digits than its factorization.

21113001201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166695.

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

Adding to 21113001201 its reverse (10210031112), we get a palindrome (31323032313).

The spelling of 21113001201 in words is "twenty-one billion, one hundred thirteen million, one thousand, two hundred one".