211021221201 has 8 divisors (see below), whose sum is σ = 321556146624. Its totient is φ = 120583554960.

The previous prime is 211021221163. The next prime is 211021221211. The reversal of 211021221201 is 102122120112.

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

It is not a de Polignac number, because 211021221201 - 2¹³ = 211021213009 is a prime.

It is a super-2 number, since 2×211021221201² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211021221211) 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, 5024314770 + ... + 5024314811.

It is an arithmetic number, because the mean of its divisors is an integer number (40194518328).

Almost surely, 2^211021221201 is an apocalyptic number.

211021221201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

211021221201 is a deficient number, since it is larger than the sum of its proper divisors (110534925423).

211021221201 is a wasteful number, since it uses less digits than its factorization.

211021221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10048629591.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 211021221201 its reverse (102122120112), we get a palindrome (313143341313).

The spelling of 211021221201 in words is "two hundred eleven billion, twenty-one million, two hundred twenty-one thousand, two hundred one".