21100201131 has 8 divisors (see below), whose sum is σ = 28279372240. Its totient is φ = 13993915392.

The previous prime is 21100200997. The next prime is 21100201139. The reversal of 21100201131 is 13110200112.

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

It is not a de Polignac number, because 21100201131 - 2¹⁷ = 21100070059 is a prime.

It is a super-2 number, since 2×21100201131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21100201139) 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, 18220666 + ... + 18221823.

It is an arithmetic number, because the mean of its divisors is an integer number (3534921530).

Almost surely, 2^21100201131 is an apocalyptic number.

21100201131 is a deficient number, since it is larger than the sum of its proper divisors (7179171109).

21100201131 is a wasteful number, since it uses less digits than its factorization.

21100201131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36442685.

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

Adding to 21100201131 its reverse (13110200112), we get a palindrome (34210401243).

The spelling of 21100201131 in words is "twenty-one billion, one hundred million, two hundred one thousand, one hundred thirty-one".