20201132215 has 96 divisors (see below), whose sum is σ = 29905049664. Its totient is φ = 12943687680.

The previous prime is 20201132213. The next prime is 20201132221. The reversal of 20201132215 is 51223110202.

It is not a de Polignac number, because 20201132215 - 2¹ = 20201132213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20201132192 and 20201132201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201132213) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 32740587 + ... + 32741203.

It is an arithmetic number, because the mean of its divisors is an integer number (311510934).

Almost surely, 2^20201132215 is an apocalyptic number.

20201132215 is a deficient number, since it is larger than the sum of its proper divisors (9703917449).

20201132215 is a wasteful number, since it uses less digits than its factorization.

20201132215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785 (or 766 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 20201132215 its reverse (51223110202), we get a palindrome (71424242417).

The spelling of 20201132215 in words is "twenty billion, two hundred one million, one hundred thirty-two thousand, two hundred fifteen".