21002201201 has 8 divisors (see below), whose sum is σ = 21260037120. Its totient is φ = 20745810288.

The previous prime is 21002201179. The next prime is 21002201249. The reversal of 21002201201 is 10210220012.

It is a happy number.

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 21002201201 - 2¹⁴ = 21002184817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21002201261) 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, 331991 + ... + 390156.

It is an arithmetic number, because the mean of its divisors is an integer number (2657504640).

Almost surely, 2^21002201201 is an apocalyptic number.

It is an amenable number.

21002201201 is a deficient number, since it is larger than the sum of its proper divisors (257835919).

21002201201 is a wasteful number, since it uses less digits than its factorization.

21002201201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722503.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21002201201 its reverse (10210220012), we get a palindrome (31212421213).

The spelling of 21002201201 in words is "twenty-one billion, two million, two hundred one thousand, two hundred one".