21000301201 has 16 divisors (see below), whose sum is σ = 23680977408. Its totient is φ = 18449913600.

The previous prime is 21000301199. The next prime is 21000301291. The reversal of 21000301201 is 10210300012.

It is a cyclic number.

It is not a de Polignac number, because 21000301201 - 2¹ = 21000301199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21000301291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207945 + ... + 291961.

It is an arithmetic number, because the mean of its divisors is an integer number (1480061088).

Almost surely, 2^21000301201 is an apocalyptic number.

It is an amenable number.

21000301201 is a deficient number, since it is larger than the sum of its proper divisors (2680676207).

21000301201 is a wasteful number, since it uses less digits than its factorization.

21000301201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84792.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 21000301201 its reverse (10210300012), we get a palindrome (31210601213).

The spelling of 21000301201 in words is "twenty-one billion, three hundred one thousand, two hundred one".