211215430101 has 64 divisors (see below), whose sum is σ = 315051376640. Its totient is φ = 124991424000.

The previous prime is 211215430067. The next prime is 211215430109. The reversal of 211215430101 is 101034512112.

It is not a de Polignac number, because 211215430101 - 2¹⁵ = 211215397333 is a prime.

It is a super-2 number, since 2×211215430101² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211215430109) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 187081305 + ... + 187082433.

It is an arithmetic number, because the mean of its divisors is an integer number (4922677760).

Almost surely, 2^211215430101 is an apocalyptic number.

It is an amenable number.

211215430101 is a deficient number, since it is larger than the sum of its proper divisors (103835946539).

211215430101 is a wasteful number, since it uses less digits than its factorization.

211215430101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2018.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 211215430101 its reverse (101034512112), we get a palindrome (312249942213).

The spelling of 211215430101 in words is "two hundred eleven billion, two hundred fifteen million, four hundred thirty thousand, one hundred one".